Foam Air Filters | McMaster-Carr

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About Air Filter Efficiency Ratings

Reusable Air Filter Rolls

Wash and reuse these rolls. Cut to the size you need.

These rolls meet UL 900 flame retardance requirements.

Polyurethane pads with more pores per inch catch smaller particles than pads with fewer pores per inch.

For technical drawings and 3-D models, click on a part number.

Polyurethane Foam

1/8" Thick
Roll/Pad Wd.	Material	Color	Maximum Temp, °F	Pores Per Inch		5 ft. Lg.	10 ft. Lg.	25 ft. Lg.
8"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
12"	Polyurethane Foam	Gray	200° F	30, 60	00000000	0000	00000	00000
24"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
36"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
48"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
1/4" Thick
8"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
12"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
24"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
36"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
48"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
1/2" Thick
8"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
12"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	00000
24"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
36"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	000000	000000
48"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	000000	000000
1" Thick
8"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
12"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	00000	000000
24"	Polyurethane Foam	Gray	200° F	30, 60	00000000	00000	000000	000000
36"	Polyurethane Foam	Gray	200° F	30, 60	00000000	000000	000000	000000
48"	Polyurethane Foam	Gray	200° F	30, 60	00000000	000000	000000	000000

Reusable Air Filter Pads

Wash and reuse these pads. Cut to the size you need.

These pads meet UL 900 flame retardance requirements.

Polyurethane pads with more pores per inch catch smaller particles than pads with fewer pores per inch.

For technical drawings and 3-D models, click on a part number.

Polyurethane Foam

1/8" Thick
HVAC Filter Trade Size	Color	Maximum Temperature	Pores Per Inch		Each
12 × 12	Gray	250° F	30, 60	00000000	00000
12 × 24	Gray	250° F	30, 60	00000000	0000
16 × 20	Gray	250° F	30, 60	00000000	0000
16 × 25	Gray	250° F	30, 60	00000000	0000
20 × 20	Gray	250° F	30, 60	00000000	0000
20 × 25	Gray	250° F	30, 60	00000000	00000
24 × 24	Gray	250° F	30, 60	00000000	00000
48 × 72	__	250° F	20, 45, 65, 80, 100	000000	00000
1/4" Thick
12 × 12	Gray	250° F	30, 60	00000000	0000
12 × 24	Gray	250° F	30, 60	00000000	0000
16 × 20	Gray	250° F	30, 60	00000000	0000
16 × 25	Gray	250° F	30, 60	00000000	00000
20 × 20	Gray	250° F	30, 60	00000000	00000
20 × 25	Gray	250° F	30, 60	00000000	00000
24 × 24	Gray	250° F	30, 60	00000000	00000
48 × 72	__	250° F	20, 45, 65, 80, 100	000000	00000
1/2" Thick
12 × 12	Gray	250° F	30, 60	00000000	0000
12 × 24	Gray	250° F	30, 60	00000000	00000
16 × 20	Gray	250° F	30, 60	00000000	00000
16 × 25	Gray	250° F	30, 60	00000000	00000
20 × 20	Gray	250° F	30, 60	00000000	00000
20 × 25	Gray	250° F	30, 60	00000000	00000
24 × 24	Gray	250° F	30, 60	00000000	00000
48 × 72	__	250° F	20, 45, 65, 80, 100	000000	000000
1" Thick
12 × 12	Gray	250° F	30, 60	00000000	00000
12 × 24	Gray	250° F	30, 60	00000000	00000
16 × 20	Gray	250° F	30, 60	00000000	00000
16 × 25	Gray	250° F	30, 60	00000000	00000
20 × 20	Gray	250° F	30, 60	00000000	00000
20 × 25	Gray	250° F	30, 60	00000000	00000
24 × 24	Gray	250° F	30, 60	00000000	00000
48 × 72	__	250° F	20, 45, 65, 80, 100	000000	000000
2" Thick
12 × 12	Gray	250° F	30, 60	00000000	00000
12 × 24	Gray	250° F	30, 60	00000000	00000
16 × 20	Gray	250° F	30, 60	00000000	00000
16 × 25	Gray	250° F	30, 60	00000000	00000
20 × 20	Gray	250° F	30, 60	00000000	00000
20 × 25	Gray	250° F	30, 60	00000000	00000
24 × 24	Gray	250° F	30, 60	00000000	00000
48 × 72	__	250° F	20, 45, 65, 80, 100	000000	000000

Reusable Air Filter Sample Packs

Samples of 20, 45, 65, 80, and 100 Pores Per Inch

Samples of 30 and 60 Pores Per Inch

Determine the right pores per inch for your air filtering application—each sample piece has a different pore size.

	Roll/Pad
Pores Per Inch	Lg.	Wd.	Thick.	Material	Color	Specifications Met	Pkg. Qty.		Pkg.
20, 45, 65, 80, 100	6"	6"	1/8"	Polyurethane Foam	__	UL 900	5	0000000	000000
30, 60	3"	3"	1/4"	Polyurethane Foam	Gray	UL 900	2	0000000	0000

Metal-Reinforced Reusable Air Filter Rolls

Wrapped in aluminum mesh for added support, these filters can be used without a frame. You can wash and reuse them. Cut to the size you need.

These rolls meet UL 900 flame retardance requirements.

5 ft. Lg.
Roll/Pad Wd.	MERV Filter Rating	Removes Particle Size Down To, microns	Material	Color	Max. Temp., °F	Pores Per Inch		Each
1/2" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	000000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
1" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
10 ft. Lg.
1/2" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	000000
1" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	00000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	000000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	0000000	000000
25 ft. Lg.
1/2" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000
1" Thick
15 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000
19 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000
24 1/8"	4	10	Polyurethane Foam	Green	250°	30	000000	000000

Electronic Equipment Air Filter Pads

Reusable

Designed for use with electronic equipment, these pads can withstand prolonged exposure to heat and humidity. Cut to the size you need.

Pads meet UL flame retardance requirements.

Reusable pads can be washed.

For technical drawings and 3-D models, click on a part number.

Reusable
HVAC Filter Trade Size	Material	Pores Per Inch	Specifications Met	For Removing		1/4" Thick	1/2" Thick	1" Thick
8 × 8	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
10 × 10	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	0000	00000	00000
10 × 20	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
14 × 14	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
16 × 20	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
16 × 25	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
20 × 20	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000
20 × 25	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	000000
20 × 30	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	000000
24 × 24	Polyurethane Foam	45	UL 900	Dust and Particles, Oils and Coolants	00000000	00000	00000	00000

Odor-Removal Air Filter Pads

With a higher carbon concentration than odor-removal air filter rolls, these pads handle heavier odors. Cut to the size you need; frames are sold separately.

All meet UL 900 flame retardance requirements.

Pads with a carbon concentration of 375 g/sq. ft. provide greater odor control than other pads and can handle ammonia, hydrogen sulfide, and other gases. They are often used in hospitals and laboratories.

For technical drawings and 3-D models, click on a part number.

300 g/sq. ft. Carbon Concentration
HVAC Filter Trade Size	MERV Filter Rating	Filter Efficiency @ 3 Microns	Removes Particle Size Down To, microns	Material	Color	Max. Temperature, °F		Each
1" Thick
12 × 12	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	000000
12 × 24	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
14 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
15 × 24	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
16 × 20	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
16 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
20 × 20	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
20 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
20 × 30	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
24 × 24	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
375 g/sq. ft. Carbon Concentration
1" Thick
12 × 12	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	00000
12 × 24	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000
16 × 20	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000
16 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000
20 × 20	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000
20 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000
24 × 24	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	00000000	00000

Air Filter Rolls for Automatic Roll Machines

Replace the filter roll in your automatic filtering equipment. The filter is wrapped onto a core; use the pull tabs for installation. Made of polyester, they capture more particles than fiberglass rolls. These rolls meet UL Classified flame retardance requirements.

				65 ft. Lg.
For Manufacturer	Roll/Pad Wd.	Color	Max. Temp., °F		Each
1/2" Thick
Polyester Plastic
American Air Filter	32 3/4"	White	220°	0000000	0000000
American Air Filter	44 3/4"	White	220°	0000000	000000
American Air Filter	56 3/4"	White	220°	0000000	000000
Continental	43 7/8"	White	220°	0000000	000000
Continental	55 7/8"	White	220°	0000000	000000
Continental	67 7/8"	White	220°	0000000	000000
Farr	32 3/4"	White	220°	0000000	000000
Farr	44 3/4"	White	220°	0000000	000000
Farr	56 3/4"	White	220°	0000000	000000

Filters for Abrasive Blasting Dust Collectors

Filter Cartridge
For Manufacturer	For Manufacturer Model Number	Material	Useful Life		Each
Cadillac	DC-1	Foam, Paper	Reusable	00000000	0000000
Filter Pad
Econoline	201668GY-C10, 201768GY-C5	Foam	Disposable	0000000	00000

EMI/RFI Shielding Enclosure Vents

These conductive aluminum screens block electromagnetic interference (EMI) and radio frequency interference (RFI) to prevent electrical problems such as radio static and faulty signals. Made of mesh, they let air flow through, so the pressure in your enclosure stays constant as temperatures fluctuate.

Screw through the vent frame to mount on the surface of your enclosure. A shielded foam gasket fills the gap between the enclosure and the vent.

Also known as attenuation, interference reduction at frequency measures how much interference is blocked. These vents have high attenuation and work for most applications.

For technical drawings and 3-D models, click on a part number.

For Opening		Overall							Mounting Holes
Width	Height	Width	Height	Depth	Interference Reduction @ Frequency	Frame Material	Screen Material	Mounting Fasteners Included	Number of	Diameter		Each
2"	2"	3"	3"	3/4"	52 dB @ 1 GHz	Chromate-Coated Aluminum	Chromate-Coated Aluminum	No	4	1/4"	0000000	000000
3"	3"	4"	4"	3/4"	52 dB @ 1 GHz	Chromate-Coated Aluminum	Chromate-Coated Aluminum	No	4	1/4"	0000000	000000
4"	4"	5"	5"	3/4"	52 dB @ 1 GHz	Chromate-Coated Aluminum	Chromate-Coated Aluminum	No	6	1/4"	0000000	000000
5"	5"	6"	6"	3/4"	52 dB @ 1 GHz	Chromate-Coated Aluminum	Chromate-Coated Aluminum	No	8	1/4"	0000000	000000
6"	4"	7"	5"	3/4"	52 dB @ 1 GHz	Chromate-Coated Aluminum	Chromate-Coated Aluminum	No	6	1/4"	0000000	000000