Reticulated Foam | McMaster-Carr

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About Air Filter Efficiency Ratings

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

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

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