Air Filter Pads | McMaster-Carr

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Tacky

Removes Particle Size Down To

Less than 25 μm

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189 Products

About Air Filter Efficiency Ratings

Compare MERV rating, efficiency, and particle size to find the right filter for your location—from warehouses and offices to hospitals and labs.

Low-Efficiency Reusable Air Filter Media

Wash and reuse this media to extend the life of expensive filters that catch fine particles. Installed upstream, this affordable media traps debris that can damage or clog your final filter. Cut it to the size you need and attach it to a frame.

Polyurethane Foam Pads

Image of Product. Front orientation. Air Filter Media. Low-Efficiency Reusable Air Filter Media, Pads.

Pores per Inch—Media containing more pores per inch catch smaller particles than media with fewer pores per inch.

	MERV Filter Rating	Max. Temp., ° F	Specs. Met	Choose a Number of Pores per Inch		Each
1/8" Thick



	12 × 12	Not Rated	250	UL 900	30 , 60	9803K301	00000


	12 × 24	Not Rated	250	UL 900	30 , 60	9803K306	0000
	16 × 20	Not Rated	250	UL 900	30 , 60	9803K312	0000
	16 × 25	Not Rated	250	UL 900	30 , 60	9803K317	0000
	20 × 20	Not Rated	250	UL 900	30 , 60	9803K323	0000
	20 × 25	Not Rated	250	UL 900	30 , 60	9803K328	00000
	24 × 24	Not Rated	250	UL 900	30 , 60	9803K334	00000
	48 × 72	Not Rated	250	UL 900	20 , 45 , 65 , 80 , 100	9803K2	00000


	1/4" Thick



			12 × 12	Not Rated	250	UL 900	30 , 60	9803K302	0000


			12 × 24	Not Rated	250	UL 900	30 , 60	9803K307	0000
			16 × 20	Not Rated	250	UL 900	30 , 60	9803K313	0000
			16 × 25	Not Rated	250	UL 900	30 , 60	9803K318	00000
			20 × 20	Not Rated	250	UL 900	30 , 60	9803K324	00000
			20 × 25	Not Rated	250	UL 900	30 , 60	9803K329	00000
			24 × 24	Not Rated	250	UL 900	30 , 60	9803K335	00000
			48 × 72	Not Rated	250	UL 900	20 , 45 , 65 , 80 , 100	9803K3	00000


			1/2" Thick



					12 × 12	Not Rated	250	UL 900	30 , 60	9803K303	0000


					12 × 24	Not Rated	250	UL 900	30 , 60	9803K308	00000
					16 × 20	Not Rated	250	UL 900	30 , 60	9803K314	00000
					16 × 25	Not Rated	250	UL 900	30 , 60	9803K319	00000
					20 × 20	Not Rated	250	UL 900	30 , 60	9803K325	00000
					20 × 25	Not Rated	250	UL 900	30 , 60	9803K331	00000
					24 × 24	Not Rated	250	UL 900	30 , 60	9803K336	00000
					48 × 72	Not Rated	250	UL 900	20 , 45 , 65 , 80 , 100	9803K4	000000


					1" Thick



							12 × 12	Not Rated	250	UL 900	30 , 60	9803K304	00000


							12 × 24	Not Rated	250	UL 900	30 , 60	9803K309	00000
							16 × 20	Not Rated	250	UL 900	30 , 60	9803K315	00000
							16 × 25	Not Rated	250	UL 900	30 , 60	9803K321	00000
							20 × 20	Not Rated	250	UL 900	30 , 60	9803K326	00000
							20 × 25	Not Rated	250	UL 900	30 , 60	9803K332	00000
							24 × 24	Not Rated	250	UL 900	30 , 60	9803K337	00000
							48 × 72	Not Rated	250	UL 900	20 , 45 , 65 , 80 , 100	9803K6	000000


							2" Thick



							12 × 12	Not Rated	250	UL 900	30 , 60	9803K305	00000


							12 × 24	Not Rated	250	UL 900	30 , 60	9803K311	00000
							16 × 20	Not Rated	250	UL 900	30 , 60	9803K316	00000
							16 × 25	Not Rated	250	UL 900	30 , 60	9803K322	00000
							20 × 20	Not Rated	250	UL 900	30 , 60	9803K327	00000
							20 × 25	Not Rated	250	UL 900	30 , 60	9803K333	00000
							24 × 24	Not Rated	250	UL 900	30 , 60	9803K338	00000
							48 × 72	Not Rated	250	UL 900	20 , 45 , 65 , 80 , 100	9803K7	000000

Plastic Fiber Pads

Collect high volumes of dust, even in poor weather, such as rain, snow, and wind. This material is also known as hog hair.

	MERV Filter Rating	Max. Temp., ° F	Certification	Pkg. Qty.		Pkg.
1" Thick



	12 × 24	3	180	UL Classified	25	2173K271	0000000


	16 × 20	3	180	UL Classified	25	2173K272	000000
	20 × 20	3	180	UL Classified	25	2173K273	000000
	20 × 25	3	180	UL Classified	25	2173K274	000000
	20 × 30	3	180	UL Classified	25	2173K275	000000
	24 × 24	3	180	UL Classified	25	2173K276	000000

Low-Efficiency Air Filter Media

Extend the life of expensive filters that catch fine particles. Installed upstream, this affordable media traps debris that can damage or clog your final filter. Cut this media to the size you need and attach it to a frame.

Pads

	MERV Filter Rating	Max. Temp., ° F	Certification	Pkg. Qty.		Pkg.
1/4" Thick



	12 × 12	Not Rated	220	UL Classified	10	2182K63	000000


	12 × 24	Not Rated	220	UL Classified	10	2182K64	00000
	16 × 20	Not Rated	220	UL Classified	10	2182K65	00000
	16 × 25	Not Rated	220	UL Classified	10	2182K66	00000
	20 × 20	Not Rated	220	UL Classified	10	2182K67	00000
	20 × 25	Not Rated	220	UL Classified	10	2182K68	00000
	24 × 24	Not Rated	220	UL Classified	10	2182K69	00000


	1/2" Thick



			12 × 12	Not Rated	220	UL Classified	10	2182K51	00000


			12 × 24	Not Rated	220	UL Classified	10	2182K52	00000
			16 × 20	Not Rated	220	UL Classified	10	2182K53	00000
			16 × 25	Not Rated	220	UL Classified	10	2182K54	00000
			20 × 20	Not Rated	220	UL Classified	10	2182K55	00000
			20 × 25	Not Rated	220	UL Classified	10	2182K57	00000
			24 × 24	Not Rated	220	UL Classified	10	2182K58	00000
			25 × 48	Not Rated	220	UL Classified	1	2182K71	00000


			1" Thick



					12 × 12	Not Rated	220	UL Classified	10	2182K59	00000


					12 × 24	Not Rated	220	UL Classified	10	2182K11	00000
					16 × 20	Not Rated	220	UL Classified	10	2182K12	00000
					16 × 25	Not Rated	220	UL Classified	10	2182K13	00000
					20 × 20	Not Rated	220	UL Classified	10	2182K14	00000
					20 × 25	Not Rated	220	UL Classified	10	2182K15	00000
					24 × 24	Not Rated	220	UL Classified	10	2182K16	00000
					25 × 48	Not Rated	220	UL Classified	1	2182K72	00000
					30 × 48	Not Rated	220	UL Classified	1	2182K73	00000


					2" Thick



							12 × 12	Not Rated	220	UL Classified	10	2182K61	00000


							12 × 24	Not Rated	220	UL Classified	10	2182K62	00000
							16 × 20	Not Rated	220	UL Classified	10	2182K32	00000
							16 × 25	Not Rated	220	UL Classified	10	2182K33	00000
							20 × 20	Not Rated	220	UL Classified	10	2182K34	00000
							20 × 25	Not Rated	220	UL Classified	10	2182K35	00000
							24 × 24	Not Rated	220	UL Classified	10	2182K36	00000

Reusable Air Filter Media for Electronics

Wash and reuse this media to keep the air in your electronics clean. It won't break down when exposed to prolonged heat and humidity. Cut it to the size you need.

HVAC Filter Trade Size	MERV Filter Rating	Specs. Met		1/4" Thick	1" Thick
8 × 8	Not Rated	UL 900	5307T212	00000	00000
10 × 10	Not Rated	UL 900	5307T213	0000	00000
10 × 20	Not Rated	UL 900	5307T214	00000	00000
14 × 14	Not Rated	UL 900	5307T215	00000	00000
16 × 20	Not Rated	UL 900	5307T216	00000	00000
16 × 25	Not Rated	UL 900	5307T217	00000	00000
20 × 20	Not Rated	UL 900	5307T218	00000	00000
20 × 25	Not Rated	UL 900	5307T219	00000	000000
20 × 30	Not Rated	UL 900	5307T222	00000	000000
24 × 24	Not Rated	UL 900	5307T221	00000	00000

Air Filter Media for Electronics

Protect your electronics with this media that stands up to prolonged exposure to heat and humidity. Cut it to the size you need.

HVAC Filter Trade Size	MERV Filter Rating	Specs. Met		1/2" Thick	1" Thick
8 × 8	6	UL 900	5307T301	00000	00000
10 × 10	6	UL 900	5307T302	0000	0000
10 × 20	6	UL 900	5307T303	0000	0000
14 × 14	6	UL 900	5307T304	0000	0000
16 × 20	6	UL 900	5307T305	0000	0000
16 × 25	6	UL 900	5307T306	0000	0000
20 × 20	6	UL 900	5307T307	0000	0000
20 × 25	6	UL 900	5307T308	0000	0000
20 × 30	6	UL 900	5307T311	0000	0000
24 × 24	6	UL 900	5307T309	0000	0000

Low-Efficiency Reusable Air Filter Media Selector Packs

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

Pores per Inch—Media containing more pores per inch catch smaller particles than media with fewer pores per inch.

Pores per In.	Wd.	Lg.	Thk.	MERV Filter Rating	Specs. Met	No. of Pieces		Each
20, 45, 65, 80, 100	6"	6"	1/8"	Not Rated	UL 900	5	9803K99	000000
30, 60	3"	3"	1/4"	Not Rated	UL 900	2	2195K99	0000

Reusable Air Filter Media

Wash and reuse this media, which collects large dust and debris in your HVAC system. This filter media is rigid enough to be used without a frame. Just cut it to the size you need.

Pads

	MERV Filter Rating	Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.
1/2" Thick



	12 × 12	5	225	UL 900	5	21205K13	000000


	12 × 24	5	225	UL 900	5	21205K14	00000
	14 × 25	5	225	UL 900	5	21205K16	00000
	15 × 24	5	225	UL 900	5	21205K18	00000
	16 × 20	5	225	UL 900	5	21205K19	00000
	16 × 25	5	225	UL 900	5	21205K21	00000
	20 × 20	5	225	UL 900	5	21205K23	00000
	20 × 25	5	225	UL 900	5	21205K24	00000
	20 × 30	5	225	UL 900	5	21205K26	00000
	24 × 24	5	225	UL 900	5	21205K27	00000
	25 × 48	5	225	UL 900	1	21205K22	00000


	25 × 48	5	225	UL 900	5	21205K28	000000


	1" Thick



			12 × 12	6	225	UL 900	5	21205K29	00000


			12 × 24	6	225	UL 900	5	21205K31	00000
			14 × 25	6	225	UL 900	5	21205K32	00000
			15 × 24	6	225	UL 900	5	21205K33	00000
			16 × 20	6	225	UL 900	5	21205K34	00000
			16 × 25	6	225	UL 900	5	21205K35	00000
			20 × 20	6	225	UL 900	5	21205K36	00000
			20 × 25	6	225	UL 900	5	21205K37	00000
			20 × 30	6	225	UL 900	5	21205K38	00000
			24 × 24	6	225	UL 900	5	21205K39	00000
			25 × 48	6	225	UL 900	1	21205K12	00000


			25 × 48	6	225	UL 900	5	21205K41	000000
			30 × 48	6	225	UL 900	1	21205K25	00000


			2" Thick



					12 × 12	6	200	UL 900	5	21205K42	00000


					12 × 24	6	200	UL 900	5	21205K43	00000

Pad and Roll Air Filter Frames

Add support to filter rolls and pads that have been cut to size. Actual size is _1/2" less than trade size.

	Frame Material	Frame Ga.	Support Grill Ga.	Includes		Each
For 1/2" Thick Filters



	12 × 24	Galvanized Steel	24	16	Retaining Wires	2169K63	000000


	16 × 20	Galvanized Steel	24	16	Retaining Wires	2169K64	00000
	16 × 25	Galvanized Steel	24	16	Retaining Wires	2169K65	00000
	20 × 20	Galvanized Steel	24	16	Retaining Wires	2169K68	00000
	20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K66	00000
	24 × 24	Galvanized Steel	24	16	Retaining Wires	2169K67	00000


	For 1" Thick Filters



			12 × 24	Galvanized Steel	24	16	Retaining Wires	2169K41	00000


			16 × 20	Galvanized Steel	24	16	Retaining Wires	2169K12	00000
			16 × 25	Galvanized Steel	24	16	Retaining Wires	2169K13	00000
			20 × 20	Galvanized Steel	24	16	Retaining Wires	2169K14	00000
			20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K15	00000
			24 × 24	Galvanized Steel	24	16	Retaining Wires	2169K16	00000


			For 2" Thick Filters



					12 × 24	Galvanized Steel	24	16	Retaining Wires	2169K51	00000


					16 × 20	Galvanized Steel	24	16	Retaining Wires	2169K22	00000
					16 × 25	Galvanized Steel	24	16	Retaining Wires	2169K23	00000
					20 × 20	Galvanized Steel	24	16	Retaining Wires	2169K24	00000
					20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K25	00000
					24 × 24	Galvanized Steel	24	16	Retaining Wires	2169K26	00000

Air Filter Media

Replace dirty HVAC filters with this media to collect large dust and debris. Cut this media to the size you need and attach it to a frame.

Pads

					Small Pack			Large Pack
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F	Certification	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
1" Thick



		12 × 12	6	250	UL Classified	6	2173K133	000000	50	2173K119	0000000


		12 × 24	6	250	UL Classified	6	2173K569	00000	50	2173K584	000000
		16 × 20	6	250	UL Classified	6	2173K611	00000	50	2173K622	000000
		16 × 25	6	250	UL Classified	6	2173K638	00000	50	2173K659	000000
		20 × 20	6	250	UL Classified	6	2173K675	00000	50	2173K679	000000
		20 × 25	6	250	UL Classified	6	2173K685	00000	50	2173K69	000000
		24 × 24	6	250	UL Classified	3	2173K694	00000	50	2173K693	000000


		2" Thick



				12 × 12	6	250	UL Classified	6	2173K706	00000	50	2173K704	000000


				12 × 24	6	250	UL Classified	6	2173K928	00000	50	2173K71	000000
				16 × 20	6	250	UL Classified	6	2173K174	00000	50	2173K302	000000
				16 × 25	6	250	UL Classified	6	2173K366	00000	50	2173K364	000000
				20 × 20	6	250	UL Classified	6	2173K446	00000	50	2173K412	000000
				20 × 25	6	250	UL Classified	3	2173K517	00000	50	2173K474	000000
				24 × 24	6	250	UL Classified	3	2173K596	00000	50	2173K601	000000

Odor-Removing Air Filter Media

Carbon granules inside this media absorb odors from the air. Choose media with a high carbon concentration to tackle strong odors. Cut it to the size you need and attach it to a frame.

Strong-Odor-Removing Pads

					300 g/ft² Carbon Concentration		375 g/ft² Carbon Concentration
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each		Each
1" Thick



		12 × 12	7	120	UL 900	3722T79	000000	3722T99	000000


		12 × 24	7	120	UL 900	3722T82	00000	3722T101	00000
		14 × 25	7	120	UL 900	3722T83	00000	———	0
		15 × 24	7	120	UL 900	3722T84	00000	———	0
		16 × 20	7	120	UL 900	3722T86	00000	3722T104	00000
		16 × 25	7	120	UL 900	3722T89	00000	3722T105	00000
		20 × 20	7	120	UL 900	3722T95	00000	3722T106	00000
		20 × 25	7	120	UL 900	3722T96	00000	3722T107	00000
		20 × 30	7	120	UL 900	3722T97	00000	———	0
		24 × 24	7	120	UL 900	3722T98	00000	3722T109	00000