20 × 30 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.

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



		20 × 30	8	180	UL 900	00000000	000000	00000000	000000


		2" Thick



				20 × 30	8	180	UL 900	00000000	00000	00000000	00000

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 × 30	Not Rated	26	180	UL 900	0000000	0000000

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" Thick



	20 × 30	4	18	240	UL 900	0000000	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 × 30	Not Rated	UL 900	00000000	000000	000000	0000000

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 × 30	5	180	UL Classified	12	0000000	000000

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.

Plastic Fiber Pads

Image of Product. Front orientation. Air Filter Media. Low-Efficiency Reusable Air Filter Media, 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 × 30	3	180	UL Classified	25	00000000	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 × 30	6	UL 900	00000000	00000	00000

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.

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



		20 × 30	11	150	UL 900	00000000	000000	00000000	0000000


		2" Thick



				20 × 30	11	150	UL 900	00000000	00000	00000000	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.

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



		20 × 30	13	150	UL 900	00000000	000000	00000000	0000000


		2" Thick



				20 × 30	13	150	UL 900	00000000	00000	00000000	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 × 30	5	225	UL 900	5	00000000	000000


	1" Thick



			20 × 30	6	225	UL 900	5	00000000	00000

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 × 30	6	180	UL 900	0000000	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
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each
1" Thick



		20 × 30	7	120	UL 900	0000000	000000

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 × 30	Galvanized Steel	16	Yes	Retaining Clips, Sealing Gasket	000000000	000000	2	00000000	00000

Clips