About Duct Connections
More
Standard Duct and Fittings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/h01/h01a-duct-connection-gil1548180352@halfx_635503701690000000.png?ver=imagenotfound)
No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.
Galvanized steel has good corrosion resistance. Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance. 304 stainless steel is more corrosion resistant than steel and aluminum.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k14p1-@halfx_636994815914271461.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1768k69p1-@halfx_637000832367889720.png?ver=imagenotfound)
Galvanized Steel | Aluminum | 304 Stainless Steel | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | 2 ft. | 4 ft. | 5 ft. | 2 ft. | 5 ft. | 2 ft. | 5 ft. | |||
Open Duct | ||||||||||||||
3 | 3" | 2 7/8" | 26 | Crimped | 00000000 | 0000000 | 000000 | |||||||
4 | 4" | 3 7/8" | __ | Crimped | 000000 | 000000 | 000000 | |||||||
4 | 4" | 3 7/8" | 26 | Crimped | 000000 | 000000 | 000000 | |||||||
5 | 5" | 4 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
5 | 5" | 4 7/8" | 26 | Crimped | 000000 | 0000000 | 000000 | |||||||
6 | 6" | 5 7/8" | 26 | Crimped | 000000 | 00000000 | 000000 | |||||||
7 | 7" | 6 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
7 | 7" | 6 7/8" | 26 | Crimped | 000000 | 000000 | 00000000 | |||||||
8 | 8" | 7 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
8 | 8" | 7 7/8" | 26 | Crimped | 000000 | 0000000 | 000000 | |||||||
9 | 9" | 8 7/8" | 26 | Crimped | 000000 | 000000 | 000000 | |||||||
10 | 10" | 9 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
10 | 10" | 9 7/8" | 26 | Crimped | 000000 | 000000 | 00000000 | |||||||
12 | 12" | 11 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
12 | 12" | 11 7/8" | 26 | Crimped | 000000 | 000000 | 000000 | |||||||
14 | 14" | 13 7/8" | 24 | Crimped | 000000 | 00000000 | 000000 | |||||||
14 | 14" | 13 7/8" | 26 | Crimped | 000000 | 000000 | 00000000 | |||||||
16 | 16" | 15 7/8" | 26 | Crimped | 00000000 | 000000 | 000000 | |||||||
18 | 18" | 17 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
20 | 20" | 19 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
22 | 22" | 21 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | |||||||
24 | 24" | 23 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | |||||||
Closed Duct | ||||||||||||||
4 | 4" | 3 7/8" | 24 | Crimped | 000000 | 000000 | 000000000 | |||||||
5 | 5" | 4 7/8" | 24 | Crimped | 000000 | 000000 | 0000000 | |||||||
9 | 9" | 8 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
14 | 14" | 13 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
16 | 16" | 15 7/8" | 24 | Crimped | 00000000 | 000000 | 000000000 | |||||||
18 | 18" | 17 7/8" | 24 | Crimped | 00000000 | 000000 | 000000000 | |||||||
20 | 20" | 19 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
22 | 22" | 21 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 | |||||||
24 | 24" | 23 7/8" | 24 | Crimped | 00000000 | 000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1768k88c1-@halfx_636994719154948379.png?ver=imagenotfound)
Connectors with welded seams prevent leaks.
Duct Size | Female ID | Male OD | Features | End Construction | Gauge | Each | |
Galvanized Steel | |||||||
---|---|---|---|---|---|---|---|
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 0000000 |
16 | 16" | 15 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
18 | 18" | 17 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
20 | 20" | 19 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
22 | 22" | 21 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
24 | 24" | 23 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
Aluminum | |||||||
3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
7 | 7" | 5 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
304 Stainless Steel | |||||||
3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
16 | 16" | 15 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
18 | 18" | 17 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
20 | 20" | 19 7/8" | Welded Seams | Tapered | 20 | 00000000 | 00000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1768k4p1-@halfx_636995488717401640.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k874c1-@halfx_636994720776178561.png?ver=imagenotfound)
Connectors with welded seams prevent leaks.
Duct Size | Female ID | Male OD | Features | End Construction | Gauge | Each | |
Galvanized Steel | |||||||
---|---|---|---|---|---|---|---|
3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
4 | 4" | 3 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
6 | 6" | 5 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
7 | 7" | 6 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
8 | 8" | 7 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 0000000 | 000000 |
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
16 | 16" | 15 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
18 | 18" | 17 7/8" | __ | Crimped | 24 | 00000000 | 000000 |
20 | 20" | 19 7/8" | __ | Crimped | 24 | 00000000 | 000000 |
22 | 22" | 21 7/8" | __ | Crimped | 24 | 00000000 | 000000 |
24 | 24" | 23 7/8" | __ | Crimped | 24 | 00000000 | 000000 |
Aluminum | |||||||
3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
7 | 7" | 6 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
304 Stainless Steel | |||||||
3 | 3" | 2 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
4 | 4" | 3 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
5 | 5" | 4 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
6 | 6" | 5 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
7 | 7" | 6 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
8 | 8" | 7 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
10 | 10" | 9 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
12 | 12" | 11 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
14 | 14" | 13 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
16 | 16" | 15 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
18 | 18" | 17 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
20 | 20" | 19 7/8" | Welded Seams | Tapered | 20 | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k34p1-@halfx_636995502030457875.png?ver=imagenotfound)
Adjustable-angle elbow connectors can be used at an angle or straight.
Galvanized Steel | Aluminum | 304 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | Each | Each | Each | |||
3 | 3" | 2 7/8" | 26 | Crimped | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |
4 | 4" | 3 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 0000 | 0000000 | 00000 |
5 | 5" | 4 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
6 | 6" | 5 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
7 | 7" | 6 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 |
8 | 8" | 7 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 |
9 | 9" | 8 7/8" | 26 | Crimped | 0000000 | 00000 | 000000 | 00 | 000000 | 00 |
10 | 10" | 9 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 |
12 | 12" | 11 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 |
14 | 14" | 13 7/8" | 24 | Crimped | 0000000 | 00000 | 000000 | 00 | 000000 | 00 |
16 | 16" | 15 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
18 | 18" | 17 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
20 | 20" | 19 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
24 | 24" | 23 7/8" | 24 | Crimped | 0000000 | 000000 | 000000 | 00 | 000000 | 00 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k874c1-@halfx_636994720776178561.png?ver=imagenotfound)
Adjustable-angle elbow connectors can be used at an angle or straight.
Galvanized Steel | ||||||
---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | Each | |
3 | 3" | 2 7/8" | 26 | Crimped | 00000000 | 000000 |
4 | 4" | 3 7/8" | 26 | Crimped | 00000000 | 00000 |
5 | 5" | 4 7/8" | 26 | Crimped | 00000000 | 00000 |
6 | 6" | 5 7/8" | 26 | Crimped | 00000000 | 00000 |
7 | 7" | 6 7/8" | 26 | Crimped | 00000000 | 00000 |
8 | 8" | 7 7/8" | 26 | Crimped | 00000000 | 00000 |
9 | 9" | 8 7/8" | 26 | Crimped | 00000000 | 00000 |
10 | 10" | 9 7/8" | 26 | Crimped | 00000000 | 00000 |
12 | 12" | 11 7/8" | 26 | Crimped | 00000000 | 00000 |
14 | 14" | 13 7/8" | 24 | Crimped | 00000000 | 00000 |
16 | 16" | 15 7/8" | 24 | Crimped | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k93p1-@halfx_636995709318160260.png?ver=imagenotfound)
Straight connectors wrap around two female duct ends to join them.
Galvanized Steel | |||||
---|---|---|---|---|---|
Duct Size | Female ID | Gauge | End Construction | Each | |
3 | 3" | 26 | Plain | 00000000 | 000000 |
4 | 4" | 30 | Plain | 0000000 | 00000 |
5 | 5" | 30 | Plain | 0000000 | 00000 |
6 | 6" | 30 | Plain | 0000000 | 00000 |
7 | 7" | 30 | Plain | 0000000 | 00000 |
8 | 8" | 30 | Plain | 0000000 | 00000 |
10 | 10" | 28 | Plain | 0000000 | 00000 |
12 | 12" | 26 | Plain | 0000000 | 00000 |
14 | 14" | 26 | Plain | 00000000 | 00000 |
16 | 16" | 26 | Plain | 00000000 | 00000 |
18 | 18" | 26 | Plain | 00000000 | 00000 |
20 | 20" | 26 | Plain | 00000000 | 00000 |
22 | 22" | 26 | Plain | 00000000 | 00000 |
24 | 24" | 26 | Plain | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k671p1-@halfx_636995651452897143.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k68p1-@halfx_636995516416879209.png?ver=imagenotfound)
Tee connectors join or split runs of duct.
Galvanized Steel | 304 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | Each | Each | ||
Female | ||||||||
14 | 14" | __ | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
16 | 16" | __ | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
18 | 18" | __ | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
20 | 20" | __ | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
Female × Female × Male | ||||||||
3 | 3" | 2 7/8" | 26 | Crimped | 0000000 | 00000 | 000000 | 00 |
4 | 4" | 3 7/8" | 26 | Crimped | 0000000 | 00000 | 00000000 | 0000000 |
5 | 5" | 4 7/8" | 26 | Crimped | 0000000 | 00000 | 000000 | 00 |
6 | 6" | 5 7/8" | 26 | Crimped | 0000000 | 00000 | 0000000 | 00000 |
7 | 7" | 6 7/8" | 26 | Crimped | 0000000 | 00000 | 000000 | 00 |
8 | 8" | 7 7/8" | 26 | Crimped | 00000000 | 00000 | 0000000 | 000000 |
9 | 9" | 8 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
10 | 10" | 9 7/8" | 24 | Crimped | 000000 | 00 | 00000000 | 000000 |
10 | 10" | 9 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
12 | 12" | 11 7/8" | 24 | Crimped | 000000 | 00 | 00000000 | 000000 |
12 | 12" | 11 7/8" | 26 | Crimped | 00000000 | 00000 | 000000 | 00 |
14 | 14" | 13 7/8" | 24 | Crimped | 000000 | 00 | 00000000 | 000000 |
14 | 14" | 13 15/16" | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
16 | 16" | 15 7/8" | 24 | Crimped | 000000 | 00 | 00000000 | 000000 |
16 | 16" | 15 15/16" | 26 | Crimped | 00000000 | 000000 | 000000 | 00 |
18 | 18" | 17 7/8" | 24 | Crimped | 00000000 | 000000 | 00000000 | 000000 |
18 | 18" | 17 15/16" | 24 | Crimped | 00000000 | 000000 | 000000 | 00 |
20 | 20" | 19 7/8" | 24 | Crimped | 000000 | 00 | 00000000 | 000000 |
22 | 22" | 21 7/8" | 22 | Crimped | 00000000 | 000000 | 000000 | 00 |
24 | 24" | 23 7/8" | 22 | Crimped | 00000000 | 000000 | 000000 | 00 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/201/2013k58c1--37cb3cd41b61563915603-p9@halfx_636994944317977708.png?ver=imagenotfound)
Reducers connect duct with different diameters.
Duct Size | |||||||
---|---|---|---|---|---|---|---|
(A) | (B) | Female ID (A) | Male OD (B) | End Construction | Gauge | Each | |
Galvanized Steel | |||||||
4 | 3 | 4" | 2 15/16" | Crimped | 26 | 0000000 | 000000 |
5 | 4 | 5" | 3 7/8" | Crimped | 26 | 0000000 | 00000 |
6 | 4 | 6" | 3 15/16" | Crimped | 26 | 0000000 | 00000 |
6 | 5 | 6" | 4 7/8" | Crimped | 26 | 0000000 | 00000 |
7 | 6 | 7" | 5 7/8" | Crimped | 26 | 0000000 | 00000 |
8 | 6 | 8" | 5 15/16" | Crimped | 26 | 0000000 | 00000 |
8 | 7 | 8" | 6 7/8" | Crimped | 26 | 0000000 | 00000 |
9 | 8 | 9" | 7 15/16" | Crimped | 26 | 0000000 | 00000 |
10 | 6 | 10" | 5 7/8" | Crimped | 26 | 0000000 | 00000 |
10 | 7 | 10" | 6 7/8" | Crimped | 26 | 0000000 | 00000 |
10 | 8 | 10" | 7 7/8" | Crimped | 26 | 0000000 | 00000 |
12 | 6 | 12" | 5 7/8" | Crimped | 26 | 0000000 | 00000 |
12 | 7 | 12" | 6 7/8" | Crimped | 26 | 0000000 | 00000 |
12 | 8 | 12" | 7 7/8" | Crimped | 26 | 0000000 | 00000 |
12 | 10 | 12" | 9 7/8" | Crimped | 26 | 0000000 | 00000 |
14 | 10 | 14" | 9 7/8" | Plain | 22 | 00000000 | 00000 |
14 | 12 | 14" | 11 7/8" | Plain | 22 | 00000000 | 00000 |
16 | 12 | 16" | 11 7/8" | Plain | 22 | 00000000 | 00000 |
16 | 14 | 16" | 13 7/8" | Plain | 22 | 00000000 | 00000 |
18 | 14 | 18" | 13 7/8" | Plain | 22 | 00000000 | 00000 |
18 | 16 | 18" | 15 7/8" | Plain | 22 | 00000000 | 00000 |
20 | 16 | 20" | 15 7/8" | Plain | 24 | 00000000 | 000000 |
22 | 18 | 22" | 17 7/8" | Plain | 24 | 00000000 | 000000 |
24 | 20 | 24" | 19 7/8" | Plain | 24 | 00000000 | 000000 |
Aluminum | |||||||
4 | 3 | 4" | 2 7/8" | Plain | 24 | 00000000 | 00000 |
6 | 4 | 6" | 3 7/8" | Crimped | 26 | 0000000 | 00000 |
7 | 4 | 7" | 3 7/8" | Crimped | 24 | 0000000 | 00000 |
12 | 10 | 12" | 9 7/8" | Plain | 24 | 00000000 | 00000 |
304 Stainless Steel | |||||||
4 | 3 | 4" | 2 7/8" | Crimped | 26 | 0000000 | 00000 |
6 | 4 | 6" | 3 7/8" | Crimped | 26 | 0000000 | 00000 |
8 | 6 | 8" | 5 7/8" | Crimped | 26 | 0000000 | 00000 |
12 | 8 | 12" | 7 7/8" | Plain | 24 | 00000000 | 000000 |
14 | 10 | 14" | 9 7/8" | Plain | 24 | 00000000 | 000000 |
16 | 12 | 16" | 11 7/8" | Plain | 24 | 00000000 | 000000 |
18 | 14 | 18" | 13 7/8" | Plain | 24 | 00000000 | 000000 |
20 | 16 | 20" | 15 7/8" | Plain | 24 | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/201/2013k57c1--37cb3cd41b61563913740-p9@halfx_636994925584995325.png?ver=imagenotfound)
Reducers connect duct with different diameters.
Duct Size | Galvanized Steel | ||||||
---|---|---|---|---|---|---|---|
(A) | (B) | Male OD (A) | Female ID (B) | Gauge | End Construction | Each | |
4 | 3 | 3 7/8" | 3" | 24 | Plain | 00000000 | 000000 |
5 | 4 | 4 7/8" | 4" | 24 | Plain | 00000000 | 00000 |
6 | 4 | 5 7/8" | 4" | 26 | Crimped | 0000000 | 00000 |
7 | 6 | 6 7/8" | 6" | 26 | Crimped | 0000000 | 00000 |
8 | 6 | 7 7/8" | 6" | 26 | Crimped | 0000000 | 00000 |
8 | 7 | 7 7/8" | 7" | 26 | Crimped | 0000000 | 00000 |
10 | 6 | 9 7/8" | 6" | 26 | Crimped | 0000000 | 00000 |
10 | 8 | 9 7/8" | 8" | 26 | Crimped | 0000000 | 00000 |
12 | 6 | 11 7/8" | 6" | 26 | Crimped | 0000000 | 00000 |
12 | 8 | 11 7/8" | 8" | 26 | Crimped | 0000000 | 00000 |
12 | 10 | 11 7/8" | 10" | 26 | Crimped | 0000000 | 00000 |
14 | 10 | 13 7/8" | 10" | 28 | Crimped | 0000000 | 00000 |
14 | 12 | 13 7/8" | 12" | 28 | Crimped | 0000000 | 00000 |
16 | 12 | 15 7/8" | 12" | 26 | Crimped | 0000000 | 00000 |
16 | 14 | 15 7/8" | 14" | 28 | Crimped | 0000000 | 00000 |
18 | 14 | 17 7/8" | 14" | 24 | Plain | 00000000 | 000000 |
18 | 16 | 17 7/8" | 16" | 26 | Crimped | 0000000 | 00000 |
20 | 18 | 19 15/16" | 18" | 24 | Crimped | 00000000 | 00000 |
22 | 20 | 21 15/16" | 20" | 24 | Crimped | 00000000 | 00000 |
24 | 22 | 23 15/16" | 22" | 24 | Crimped | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k845c1--204496cd3e71563911167-p9@halfx_636994900523324346.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k868c1--179d194e0161563909509-p9@halfx_636994883340010680.png?ver=imagenotfound)
Reducers connect duct with different diameters.
Duct Size | Female ID | Male OD | Galvanized Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
(A) | (B) | (C) | (A) | (B) | (C) | (A) | (B) | (C) | Gauge | End Construction | Each | |
Female × Male × Male | ||||||||||||
12 | 10 | 10 | 12" | __ | __ | __ | 9 7/8" | 9 7/8" | 28 | Crimped | 00000000 | 0000000 |
14 | 10 | 10 | 14" | __ | __ | __ | 9 7/8" | 9 7/8" | 28 | Crimped | 00000000 | 000000 |
16 | 12 | 12 | 16" | __ | __ | __ | 11 7/8" | 11 7/8" | 26 | Crimped | 00000000 | 000000 |
16 | 14 | 14 | 16" | __ | __ | __ | 13 7/8" | 13 7/8" | 26 | Crimped | 00000000 | 000000 |
Male × Female × Female | ||||||||||||
4 | 3 | 3 | __ | 3" | 3" | 3 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
5 | 3 | 4 | __ | 3" | 4" | 4 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
5 | 3 | 5 | __ | 3" | 5" | 4 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
6 | 3 | 4 | __ | 3" | 4" | 5 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
6 | 4 | 4 | __ | 4" | 4" | 5 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
6 | 4 | 5 | __ | 4" | 5" | 5 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
7 | 5 | 6 | __ | 5" | 6" | 6 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
8 | 6 | 6 | __ | 6" | 6" | 7 7/8" | __ | __ | 26 | Crimped | 00000000 | 00000 |
10 | 8 | 8 | __ | 8" | 8" | 9 7/8" | __ | __ | 26 | Crimped | 00000000 | 000000 |
12 | 8 | 8 | __ | 8" | 8" | 11 7/8" | __ | __ | 26 | Crimped | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k69c1--6b27bf1105d1563898272-p9@halfx_636994770747120325.png?ver=imagenotfound)
Reducers connect duct with different diameters.
Duct Size | Male OD | Galvanized Steel | |||||||
---|---|---|---|---|---|---|---|---|---|
(A) | (B) | (C) | Female ID (A) | (B) | (C) | Gauge | End Construction | Each | |
Female × Male × Male | |||||||||
4 | 3 | 4 | 4" | 2 7/8" | 3 7/8" | 26 | Crimped | 00000000 | 000000 |
5 | 3 | 5 | 5" | 2 7/8" | 4 7/8" | 26 | Crimped | 0000000 | 00000 |
6 | 3 | 6 | 6" | 2 7/8" | 5 7/8" | 26 | Crimped | 0000000 | 00000 |
6 | 4 | 6 | 6" | 3 7/8" | 5 7/8" | 26 | Crimped | 0000000 | 00000 |
8 | 6 | 6 | 8" | 5 7/8" | 5 7/8" | 24 | Plain | 00000000 | 000000 |
10 | 8 | 8 | 10" | 7 7/8" | 7 7/8" | 24 | Plain | 00000000 | 000000 |
12 | 8 | 8 | 12" | 7 7/8" | 7 7/8" | 24 | Plain | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/173/17355k61p1-@halfx_636995543114830387.png?ver=imagenotfound)
Airflow dampers control airflow through duct.
Galvanized Steel | ||||||
---|---|---|---|---|---|---|
Duct Size | Male OD | Gauge | End Construction | Blade Material | Each | |
Standard | ||||||
4 | 3 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
5 | 4 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 00000 |
6 | 5 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 00000 |
7 | 6 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 00000 |
8 | 7 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
9 | 8 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
10 | 9 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
12 | 11 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
14 | 13 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
16 | 15 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
18 | 17 3/4" | 20 | Plain | Galvanized Steel | 00000000 | 000000 |
20 | 19 3/4" | 18 | Plain | Galvanized Steel | 00000000 | 000000 |
22 | 21 3/4" | 18 | Plain | Galvanized Steel | 00000000 | 000000 |
24 | 23 3/4" | 18 | Plain | Galvanized Steel | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/399/3996k17p1-@halfx_636995640267574445.png?ver=imagenotfound)
Add damper blades to duct to control airflow.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/178/1786k21p1-h01a-digitall@halfx_636928998035433416.png?ver=imagenotfound)
Attach damper hardware to a sheet metal blade to create a damper. A threaded mount acts as the pivot.
Galvanized Steel | ||
---|---|---|
For Max. Damper Blade Thick. | Each | |
0.022" | 0000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/177/1773k63p1-@halfx_636995525019836611.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1766k497p1-@halfx_636995525053218702.png?ver=imagenotfound)
Galvanized Steel | Aluminum | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Includes | End Construction | Gauge | Each | Gauge | Each | ||
Exhaust Vent | ||||||||||
3 | 3" | __ | Damper | Plain | __ | 000000 | 00 | 24 | 0000000 | 000000 |
4 | 4" | __ | Damper | Plain | 30 | 00000000 | 000000 | 24 | 0000000 | 00000 |
5 | 5" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | 6" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 00000 |
7 | 7" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | 8" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 000000 |
Intake Vent | ||||||||||
4 | __ | 3 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
5 | __ | 4 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | __ | 5 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
7 | __ | 6 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | __ | 7 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/201/2015k45p1-@halfx_636995540045043571.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/201/2015k46p1-@halfx_636995538181791160.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/676/6766k42p1-@halfx_636995518115459753.png?ver=imagenotfound)
Collars create branches from a rectangular duct. Cut a hole in the duct and use a collar to attach standard duct. Collar with polyethylene gasket is self-sealing because the gasket has an adhesive back. The flange has 1/8" dia. mounting holes.
Galvanized Steel | Galvanized Steel with Polyethylene Foam Gasket | ||||||||
---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | End Construction | Gauge | Each | Gauge | Each | ||
Female | |||||||||
3 | 3" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
4 | 4" | __ | Plain | 28 | 0000000 | 0000 | __ | 000000 | 00 |
5 | 5" | __ | Plain | 28 | 0000000 | 0000 | __ | 000000 | 00 |
6 | 6" | __ | Plain | 28 | 0000000 | 0000 | __ | 000000 | 00 |
8 | 8" | __ | Plain | 28 | 0000000 | 0000 | __ | 000000 | 00 |
10 | 10" | __ | Plain | 28 | 0000000 | 0000 | __ | 000000 | 00 |
12 | 12" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
14 | 14" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
16 | 16" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
18 | 18" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
20 | 20" | __ | Plain | 28 | 0000000 | 00000 | __ | 000000 | 00 |
Male | |||||||||
3 | __ | 2 7/8" | Crimped | 28 | 0000000 | 0000 | __ | 000000 | 00 |
4 | __ | 3 7/8" | Crimped | 28 | 0000000 | 0000 | __ | 000000 | 00 |
5 | __ | 4 7/8" | Crimped | 28 | 0000000 | 0000 | 24 | 0000000 | 000000 |
6 | __ | 5 7/8" | Crimped | 28 | 0000000 | 0000 | 24 | 0000000 | 00000 |
7 | __ | 6 7/8" | Crimped | __ | 000000 | 00 | 24 | 0000000 | 00000 |
8 | __ | 7 7/8" | Crimped | 28 | 0000000 | 0000 | 24 | 0000000 | 00000 |
10 | __ | 9 7/8" | Crimped | 28 | 0000000 | 0000 | 24 | 0000000 | 00000 |
12 | __ | 11 7/8" | Crimped | 28 | 0000000 | 00000 | 24 | 0000000 | 00000 |
14 | __ | 13 7/8" | Crimped | 28 | 0000000 | 00000 | 24 | 0000000 | 00000 |
16 | __ | 15 7/8" | Crimped | 28 | 0000000 | 00000 | 24 | 0000000 | 00000 |
18 | __ | 17 7/8" | Crimped | 28 | 0000000 | 00000 | 24 | 0000000 | 00000 |
20 | __ | 19 7/8" | Crimped | 28 | 0000000 | 00000 | __ | 000000 | 00 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/178/1785k14p1-@halfx_636995630323958623.png?ver=imagenotfound)
Downdraft diverters have an internal cone that prevents drafts from extinguishing pilot lights.
Galvanized Steel | ||||||
---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | Each | |
3 | 3" | 2 7/8" | 26 | Crimped | 0000000 | 000000 |
4 | 4" | 3 7/8" | 26 | Crimped | 0000000 | 00000 |
5 | 5" | 4 7/8" | 26 | Crimped | 0000000 | 00000 |
6 | 6" | 5 7/8" | 26 | Crimped | 0000000 | 00000 |
7 | 7" | 6 7/8" | 26 | Crimped | 0000000 | 00000 |
8 | 8" | 7 7/8" | 26 | Crimped | 0000000 | 000000 |
10 | 10" | 9 7/8" | 24 | Crimped | 0000000 | 000000 |
12 | 12" | 11 7/8" | 24 | Crimped | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/179/1790k24p1-@halfx_636995553930996754.png?ver=imagenotfound)
Ball joints create adjustable-angle connections. They are often used to connect duct to duct hose. Hold duct hose in place with a hose clamp (not included).
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1767k64p1-@halfx_636995513519714826.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/171/17135k83p1-@halfx_636995528780172433.png?ver=imagenotfound)
Galvanized Steel | ||||||
---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Gauge | End Construction | Each | |
Female | ||||||
3 | 3" | __ | 26 | Plain | 00000000 | 00000 |
4 | 4" | __ | 26 | Plain | 00000000 | 0000 |
5 | 5" | __ | 26 | Plain | 00000000 | 0000 |
6 | 6" | __ | 26 | Plain | 00000000 | 0000 |
7 | 7" | __ | 26 | Plain | 00000000 | 00000 |
8 | 8" | __ | 26 | Plain | 00000000 | 00000 |
9 | 9" | __ | 26 | Plain | 00000000 | 00000 |
10 | 10" | __ | 26 | Plain | 00000000 | 00000 |
12 | 12" | __ | 26 | Plain | 00000000 | 00000 |
14 | 14" | __ | 26 | Plain | 00000000 | 00000 |
16 | 16" | __ | 26 | Plain | 00000000 | 00000 |
18 | 18" | __ | 26 | Plain | 00000000 | 00000 |
20 | 20" | __ | 24 | Plain | 00000000 | 00000 |
22 | 22" | __ | 24 | Plain | 00000000 | 00000 |
24 | 24" | __ | 24 | Plain | 00000000 | 00000 |
Male | ||||||
3 | __ | 2 7/8" | 26 | Crimped | 00000000 | 0000 |
4 | __ | 3 7/8" | 26 | Crimped | 00000000 | 0000 |
5 | __ | 4 7/8" | 26 | Crimped | 00000000 | 0000 |
6 | __ | 5 7/8" | 26 | Crimped | 00000000 | 0000 |
7 | __ | 6 7/8" | 26 | Crimped | 00000000 | 00000 |
8 | __ | 7 7/8" | 26 | Crimped | 00000000 | 00000 |
9 | __ | 8 15/16" | 26 | Crimped | 00000000 | 00000 |
10 | __ | 9 7/8" | 26 | Crimped | 00000000 | 00000 |
12 | __ | 11 7/8" | 26 | Crimped | 00000000 | 00000 |
14 | __ | 13 7/8" | 26 | Crimped | 00000000 | 00000 |
16 | __ | 15 7/8" | 26 | Crimped | 00000000 | 00000 |
18 | __ | 17 7/8" | 24 | Crimped | 00000000 | 00000 |
20 | __ | 19 7/8" | 24 | Crimped | 00000000 | 00000 |
22 | __ | 21 7/8" | 24 | Crimped | 00000000 | 00000 |
24 | __ | 23 7/8" | 24 | Crimped | 00000000 | 00000 |
Quick-Disconnect Duct and Fittings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/h01/h01a-quick-assembly-duct-connection-gil1548180352@halfx_635503701730000000.png?ver=imagenotfound)
Join duct and fittings with quick-release clamps for faster disassembly and cleanout than other duct systems.
Galvanized steel has good corrosion resistance. 304 stainless steel is the most corrosion resistant.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/176/1761k165p1-@halfx_636994063384494992.png?ver=imagenotfound)
Galvanized Steel | 304 Stainless Steel | ||||||
---|---|---|---|---|---|---|---|
Duct Size | ID | Gauge | End Construction | Each | Each | ||
3 | 2 7/8" | 18 | Rolled | 00000000 | 000000 | 000000 | 00 |
3 | 3 1/16" | 22 | Rolled | 000000 | 00 | 00000000 | 000000 |
18 | 17 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
18 | 17 15/16" | 20 | Rolled | 000000 | 00 | 00000000 | 000000 |
20 | 19 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
20 | 19 15/16" | 20 | Rolled | 000000 | 00 | 00000000 | 000000 |
22 | 21 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
24 | 23 7/8" | 20 | Rolled | 00000000 | 00000 | 000000 | 00 |
Oval Duct and Fittings
![](/prerenderstable/mvPRE/contents/gfx/imagecache/435/4354n11-in_use_2@halfx_1690300187.png?ver=imagenotfound)
At about half the height, this oval duct fits in tighter spaces than round and rectangular duct. Duct and fittings press-fit together.
For technical drawings and 3-D models, click on a part number.