20 × 25 Air Filters | McMaster-Carr

The most common HVAC replacement filters. Pleats create a large surface area to filter without reducing airflow. The cardboard frame is treated to resist humidity. The galvanized steel grill prevents sagging.

Don’t see the size you need? Additional sizes are available here.

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



		20 × 25	8	180	UL 900	2	2209K633	000000	12	2209K663	000000


		2" Thick



				20 × 25	8	180	UL 900	2	2209K733	00000	12	2209K763	00000


				4" Thick



						20 × 25	8	180	UL 900	2	2209K822	00000	6	2209K842	000000

High-Efficiency Pleated Panel Air Filters

Trap common allergens such as dander, mold spores, and pollen. These filters balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters.

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



		20 × 25	11	150	UL 900	2	3881T56	000000	12	3881T11	0000000


		2" Thick



				20 × 25	11	150	UL 900	2	3881T69	00000	12	3881T24	000000


				4" Thick



						20 × 25	11	150	UL 900	2	3881T76	00000	6	3881T31	000000

Ultra-Efficiency Pleated Panel Air Filters

Capture more viruses and finer allergens than high-efficiency filters—these ultra-efficiency filters can even remove contaminants from wildfire smoke and pollution. They have pleats that create a large surface area for filtering without reducing airflow. The cardboard frame is treated to resist humidity, and the galvanized steel grill prevents sagging.

While these ultra-efficiency filters may make your HVAC system work harder than lower efficiency filters, they’re still easier on your equipment than HEPA filters.

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



		20 × 25	13	150	UL 900	2	3881T136	000000	12	3881T137	0000000


		2" Thick



				20 × 25	13	150	UL 900	2	3881T176	00000	12	3881T177	000000


				4" Thick



						20 × 25	13	150	UL 900	2	3881T198	00000	6	3881T199	000000

Panel Air Filters

Typically used as replacements in HVAC equipment, these panels work as standalone filters or as prefilters to your main filter. They are an affordable choice for protecting expensive filters that catch fine particles.

Don’t see the size you need? Additional sizes are available here.

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



	20 × 25	5	180	UL Classified	12	2063K161	000000


	2" Thick



			20 × 25	5	180	UL Classified	12	2063K798	00000

Long-Life Reusable Mesh Panel Air Filters

Last longer than standard reusable filters thanks to a thicker frame and additional mesh layers. The frame also stands up to high airflow without warping. When your filter gets dirty, just wash and reuse it.

Don’t see the size you need? Additional sizes are available here.

	MERV Filter Rating	Frame Ga.	Max. Temp., ° F	Specs. Met		Each
1/2" Thick



	20 × 25	4	18	240	UL 900	2150K511	000000


	1" Thick



			20 × 25	4	18	240	UL 900	2150K57	00000


			2" Thick



					20 × 25	4	18	240	UL 900	2150K66	00000

Reusable Mesh Panel Air Filters

Filter, rinse, and repeat. When your filter gets dirty, just wash and reuse it.

	MERV Filter Rating	Frame Ga.	Max. Temp., ° F	Specs. Met		Each
1/2" Thick



	20 × 25	Not Rated	29	240	UL 900	2061K54	000000


	1" Thick



			20 × 25	Not Rated	24	240	UL 900	2061K11	00000


			2" Thick



					20 × 25	Not Rated	24	240	UL 900	2061K16	00000

Odor-Removing Pleated Panel Air Filters

Carbon granules absorb odors. Pleats create a large surface area to filter without reducing airflow. The cardboard frame won't warp because it is treated to resist humidity.

Strong Odor Removing—Packed with 15 times more carbon than standard odor-removal air filters to eliminate heavy odors.

	Max. Temp., ° F	Specs. Met		Each
Odor-Removing Air Filters







	1" Thick

	20 × 25	7	20	140	—	20695K72	000000




			2" Thick

			20 × 25	7	20	140	—	20695K78	00000




					4" Thick

					20 × 25	7	20	140	—	20695K15	00000


					Strong-Odor-Removing Air Filters







									2" Thick

									20 × 25	7	300	120	UL 900	4043T47	00000

Mildew-Resistant Pleated Panel Air Filters

An antimicrobial compound inhibits mildew and mold from growing on your filter. Pleats create a large surface area for filtering without reducing airflow.

Cannot Be Sold To—Product registration requirements restrict sales to the listed areas.

						Small Pack			Large Pack
	HVAC Filter Trade Size	MERV Filter Rating	Cannot Be Sold To	Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
1" Thick



		20 × 25	8	Canada	150	UL 900	1	2211K248	00000	12	2211K348	0000000


		2" Thick



				20 × 25	8	Canada	150	UL 900	1	2211K259	00000	12	2211K359	000000


				4" Thick



						20 × 25	8	Canada	150	UL 900	1	2211K265	00000	6	2211K365	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



	20 × 25	Not Rated	220	UL Classified	10	2182K68	000000


	1/2" Thick



			20 × 25	Not Rated	220	UL Classified	10	2182K57	00000


			1" Thick



					20 × 25	Not Rated	220	UL Classified	10	2182K15	00000


					2" Thick



							20 × 25	Not Rated	220	UL Classified	10	2182K35	00000

High-Temperature Reusable Mesh Panel Air Filters


Galvanized Steel Frame	Stainless Steel Frame

These filters are built to withstand higher temperatures than other mesh panel air filters. They can be washed and reused.

	Air Filters						Optional Handles
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each		Pair
Galvanized Steel with Galvanized Steel Frame







				2" Thick

				20 × 25	4	425	UL 900	2157K22	000000	2157K32	00000


				Stainless Steel with Stainless Steel Frame







								2" Thick

								20 × 25	4	900	UL 900	22115K32	000000	———	0

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



	20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K66	000000


	For 1" Thick Filters



			20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K15	00000


			For 2" Thick Filters



					20 × 25	Galvanized Steel	24	16	Retaining Wires	2169K25	00000

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



	20 × 25	Not Rated	250	UL 900	30, 60	9803K328	000000


	1/4" Thick



			20 × 25	Not Rated	250	UL 900	30, 60	9803K329	00000


			1/2" Thick



					20 × 25	Not Rated	250	UL 900	30, 60	9803K331	00000


					1" Thick



							20 × 25	Not Rated	250	UL 900	30, 60	9803K332	00000


							2" Thick



									20 × 25	Not Rated	250	UL 900	30, 60	9803K333	00000

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



	20 × 25	3	180	UL Classified	25	2173K274	0000000

Smart High-Efficiency Pleated Panel Air Filters

Get an alert on your phone or tablet when it’s time to change your air filter. No need to set a reminder or check the filter surface for dirt—a sensor on these filters tracks your HVAC system’s airflow and usage, so you don’t change the filter too early or too late. The sensor is Bluetooth-enabled, so it pushes tracking information to a downloadable app.

A pleated construction gives these filters a large surface area to trap contaminants. These high-efficiency filters balance good airflow with high filtering efficiency and capture common allergens such as dander, mold spores, and pollen.

These filters are disposable, but the sensor contains a lithium battery. Follow local regulations for battery disposal.

	MERV Filter Rating	Max. Temp.	Pkg. Qty.		Pkg.
1" Thick



	20 × 25	12	Not Rated	2	6358N23	000000

Electrostatic Reusable Panel Air Filters

An inherent electrostatic charge attracts dust and particles to these filters. They can be washed and reused.

	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each
1" Thick



	20 × 25	6	180	UL 900	2065K54	000000


	2" Thick



			20 × 25	6	180	UL 900	2065K64	000000

Snug-Fit Panel Air Filters

The filter material wraps all the way around the frame. This creates a tight seal that stops dirty air from leaking around the edges.

				Pkg. of 2		Pkg. of 12
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F		Pkg.		Pkg.
1" Thick



		20 × 25	8	220	2167K35	000000	2167K65	0000000

Mildew-Resistant Snug-Fit Panel Air Filters

Single Panel

Limit fungal growth and air leaks. An antimicrobial compound stops mildew and mold from growing on your filter. The filter material wraps around the frame to stop dirty air from leaking around the edges.

	Max. Temp., ° F	Specs. Met		Each
Single Panel







	1 1/2" Thick

	20 × 25	1	8	200	UL 900	2096K76	000000

Long-Life High-Efficiency Pleated Panel Air Filters

Tight pleats create a larger surface area than standard pleats for a longer life. These filters trap common allergens such as dander, mold spores, and pollen. High-efficiency filters also balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters. Use them in data centers and other locations that require extra-clean air.

	MERV Filter Rating	Max. Temp., ° F		Each
2" Thick



	20 × 25	11	175	5437N17	000000


	4" Thick



			20 × 25	11	175	5437N25	000000

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



	20 × 25	5	225	UL 900	5	21205K24	000000


	1" Thick



			20 × 25	6	225	UL 900	5	21205K37	00000

Ultra-Efficiency Odor-Removing Pleated Panel Air Filters

Clear the air of fine particles and odors caused by high levels of pollution, such as wildfire smoke. These filters contain carbon granules to absorb odors. Pleats create a large surface area to filter without reducing airflow.

	MERV Filter Rating	Carbon Concentration, g/ft²	Max. Temp., ° F	Specs. Met		Each
2" Thick



	20 × 25	13	18	180	UL 900	5482N14	0000000

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



		20 × 25	6	250	UL Classified	6	2173K685	000000	50	2173K69	0000000


		2" Thick



				20 × 25	6	250	UL Classified	3	2173K517	00000	50	2173K474	000000

Easy-Install Electrostatic Reusable Panel Air Filters

Magnetic strips on the back of the frame make these filters easy to install and remove. Because you don’t need to disassemble equipment to remove them, they are often used as prefilters on steel air intake louvers, metal cabinets, and metal grid systems. Made of polypropylene, an inherent electrostatic charge attracts dust and particles to these filters. They can be washed and reused.

	MERV Filter Rating	Frame Ga.	Max. Temp., ° F	Specs. Met		Each
3/8" Thick



	20 × 25	Not Rated	26	180	UL 900	5442N22	0000000

Panel Air Filter Frames


	Replacement Clip

Hold panel filters in place. The frames can be welded together to hold multiple filters. The trade size is the actual size of the frame.

	Frames							Replacement Clips
	For HVAC Filter Trade Size	Frame Material	Frame Ga.	Mounting Hardware Included	Includes		Each	Pkg. Qty.		Pkg.
For 2" Thick Filters



		20 × 25	Galvanized Steel	16	Yes	Retaining Clips, Sealing Gasket	20615K95	000000	2	20615K85	00000

Clips

For Filter Thk.	Finished Material	Pkg. Qty.		Pkg.
1"	Galvanized Steel	2	20615K86	00000
4"	Galvanized Steel	2	20615K87	0000

Grease Filters

Install in exhaust hoods to remove grease and oil from the air. The layers of baffled metal collect grease while allowing air to pass through. Install so baffles are vertical.

					Aluminum with Aluminum Frame			Galvanized Steel with Galvanized Steel Frame			Stainless Steel with Stainless Steel Frame
	HVAC Filter Trade Size	MERV Filter Rating	Flammability Rating	Certification	Max. Temp., ° F		Each	Max. Temp., ° F		Each	Max. Temp., ° F		Each
2" Thick



		20 × 25	Not Rated	NFPA 96	UL Recognized Component	250	2092K11	000000	450	2092K21	000000	900	2092K31	0000000

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



		20 × 25	7	120	UL 900	3722T96	000000	3722T107	000000

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	1/2" Thick	1" Thick
20 × 25	Not Rated	UL 900	5307T219	000000	000000	0000000

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
20 × 25	6	UL 900	5307T308	00000	00000