Box Air Filters | McMaster-Carr

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HVAC Filter Trade Size

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MERV Filter Rating

Air Filter Performance

For Removing

Frame Material

Filter Efficiency @ 0.3 Microns

Filter Efficiency @ 3 Microns

Material

Filter Efficiency

Filter Efficiency @ 1 Microns

Maximum Temperature

Removes Particle Size Down To

Application

For Use With

Construction

Filtering Method

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Specifications Met

UL 900

DFARS Specialty Metals

RoHS

REACH

Export Control Classification Number (ECCN)

Component

69 Products

Air Filter Performance

Medium Efficiency

Remove large dust and debris from the air

2 products

High Efficiency

Catch dust and common allergens

8 products

Air Filter Performance

Ultra Efficiency

Trap viruses, smoke, and fine allergens

17 products

HEPA

Exceptional airborne contaminant control

37 products

HEPA Box Air Filters

Provide exceptional filtration in hospitals, clean rooms, and other places where you need to control airborne contaminants. The rigid frame withstands withstands fluctuations in airflow, such as those created by variable air volume systems. There's a sealing gasket on the downstream side of the filter to prevent leaks.

For a more affordable alternative to HEPA filters, consider ultra-efficiency filters. They are made for areas where absolute filtration isn't required.

	HVAC Filter Trade Size	Material	Frame Material	Max. Temp., ° F	Specs. Met		Each
2 3/4" Thick



		12 × 12	Fiberglass	Aluminum	160	UL 900	5612T2	0000000


		12 × 12	Fiberglass	Stainless Steel	160	UL 900	5612T24	000000
		24 × 12	Fiberglass	Aluminum	160	UL 900	5612T3	000000
		24 × 12	Fiberglass	Stainless Steel	160	UL 900	5612T25	000000
		24 × 24	Fiberglass	Aluminum	160	UL 900	5612T4	000000
		24 × 24	Fiberglass	Stainless Steel	160	UL 900	5612T26	000000


		3" Thick



				12 × 12	Fiberglass	Particleboard	180	UL 900	2153K31	000000


				12 × 24	Fiberglass	Particleboard	180	UL 900	2153K33	000000
				24 × 24	Fiberglass	Particleboard	180	UL 900	2153K35	000000
				24 × 36	Fiberglass	Particleboard	180	UL 900	2153K37	000000


				5 3/4" Thick



						8 × 8	Fiberglass	Particleboard	180	UL 900	2153K49	000000


						12 × 12	Fiberglass	Particleboard	180	UL 900	2153K59	000000
						12 × 24	Fiberglass	Particleboard	180	UL 900	2153K69	000000
						24 × 24	Fiberglass	Particleboard	180	UL 900	2153K73	000000


						5 7/8" Thick



								8 × 8	Fiberglass	Galvanized Steel	180	UL 900	5612T5	000000


								8 × 8	Fiberglass	Stainless Steel	180	UL 900	5612T27	000000
								12 × 12	Fiberglass	Galvanized Steel	180	UL 900	5612T6	000000
								12 × 12	Fiberglass	Stainless Steel	180	UL 900	5612T28	000000
								24 × 12	Fiberglass	Galvanized Steel	180	UL 900	5612T7	000000
								24 × 12	Fiberglass	Stainless Steel	180	UL 900	5612T31	00000000
								24 × 24	Fiberglass	Galvanized Steel	180	UL 900	5612T8	000000
								24 × 24	Fiberglass	Stainless Steel	180	UL 900	5612T32	00000000


								11 1/2" Thick



										12 × 24	Fiberglass	Particleboard	180	UL 900	2153K75	000000


										23 3/8 × 23 3/8	Fiberglass	Particleboard	180	UL 900	2153K14	000000
										23 3/8 × 23 3/8	Fiberglass	Galvanized Steel	180	UL 900	5612T11	000000
										24 × 12	Fiberglass	Galvanized Steel	180	UL 900	5612T9	000000
										24 × 12	Fiberglass	Stainless Steel	180	UL 900	5612T33	00000000
24 × 24										Fiberglass	Particleboard	180	UL 900	2153K71	000000
24 × 24	Fiberglass									Galvanized Steel	180	UL 900	5612T12	000000
24 × 24	Fiberglass									Stainless Steel	180	UL 900	5612T35	00000000
24 × 30	Fiberglass									Particleboard	180	UL 900	2153K16	000000
24 × 30	Fiberglass									Galvanized Steel	180	UL 900	5612T13	000000
24 × 30	Fiberglass									Stainless Steel	180	UL 900	5612T36	00000000

ULPA Box Air Filters

Purify the air in your most sensitive environments. Since ULPA filters remove 99.999% of particles, they're used in semiconductor, pharmaceutical, and aerospace facilities. Constructed with fibers more densely woven than HEPA filters, they catch 10 times more particles. However, they need to be changed more often because they collect contaminants more quickly.

	Max. Temp., ° F	Specs. Met		Each
11 1/2" Thick



	12 × 12	180	UL 900	5543N11	0000000


	24 × 12	180	UL 900	5543N12	000000
	24 × 18	180	UL 900	5543N13	000000
	24 × 24	180	UL 900	5543N14	000000
	24 × 30	180	UL 900	5543N15	000000

Long-Life Ultra-Efficiency Box Air Filters


4 Panels	6 Panels	8 Panels

Multiple panels maximize filtering surface area for long service life. These ultra-efficiency air filters capture viruses, fine allergens, and even wildfire smoke and heavy pollution. They have a V-shape design and a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems. The more filter panels they have, the more filtering surface they have for a longer service life.

				4 Panels		6 Panels		8 Panels
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F		Each		Each		Each
12" Thick



		12 × 24	14	180	1729T11	0000000	———	0	1729T16	0000000


		20 × 20	14	180	———	0	1729T47	0000000	———	0
		20 × 24	14	180	1729T12	000000	———	0	1729T17	000000
		24 × 24	14	180	1729T14	000000	———	0	1729T18	000000

High-Efficiency Box Air Filters

Breathe easier with filters that trap common allergens, such as dander, mold spores, and pollen. They're also designed to handle airflow fluctuations, like those in variable air volume systems. Often used in data centers and other environments needing extra-clean air, these filters balance efficiency and airflow—making them more cost-effective than higher-rated options.

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



	12 × 24	11	180	UL 900	8231T15	0000000


	20 × 24	11	180	UL 900	8231T16	000000
	24 × 24	11	180	UL 900	8231T14	000000


	12" Thick



			12 × 24	11	180	UL 900	8231T12	000000


			20 × 24	11	180	UL 900	8231T13	000000
			24 × 24	11	180	UL 900	8231T11	000000

Ultra-Efficiency Box Air Filters

Capture viruses, fine allergens, and even wildfire smoke and heavy pollution with filters built to withstand airflow fluctuations, like those in variable air volume systems. 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.

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



	12 × 24	14	180	UL 900	8231T22	0000000


	20 × 24	14	180	UL 900	8231T23	000000
	24 × 24	14	180	UL 900	8231T21	000000


	12" Thick



			12 × 24	14	180	UL 900	8231T18	000000


			20 × 24	14	180	UL 900	8231T19	000000
			24 × 24	14	180	UL 900	8231T17	000000

Long-Life HEPA Box Air Filters


Aluminum Frame	Steel Frame

Extend the time between filter changes in areas where you need to control airborne contaminants, such as hospitals and clean rooms. Tight pleats create a larger surface area than standard pleats for a longer life.

For a more affordable alternative to these HEPA filters, consider ultra-efficiency filters. They are made for areas where absolute filtration isn't required.

Aluminum Frame—These filters last longer than our steel-framed filters. The V-shaped panels in the aluminum frame collect more dust, so they need to be changed less often.

	Material	Frame Material	Max. Temp., ° F		Each
11 1/2" Thick



	24 × 12	Fiberglass	Aluminum	180	5435N12	0000000


	24 × 12	Fiberglass	Steel	160	5435N13	000000
	24 × 24	Fiberglass	Aluminum	180	5435N11	000000
	24 × 24	Fiberglass	Steel	160	5435N14	000000

Ultra-Efficiency Odor-Removing Box Air Filters

Clear the air of odors and viruses, fine allergens, and even wildfire smoke and heavy pollution. These filters contain carbon granules to absorb odors. The rigid frame won’t bend or twist from sudden changes in airflow, such as those created by variable air volume systems. For a long service life, the V-shape design increases the filtering area and reduces resistance to air.

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



	12 × 24	15	46	130	5451N12	000000000


	24 × 24	15	46	130	5451N11	00000000

High-Temperature High-Efficiency Box Air Filters

Handle the heat while capturing common allergens, such as dander, mold spores, and pollen. These filters won't break down in temperatures up to 900°F, and they can also withstand airflow fluctuations, like those in variable air volume systems. High-efficiency filters like these balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters.

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



	12 × 24	11	900	UL 900	8231T45	0000000


	24 × 24	11	900	UL 900	8231T44	000000

High-Temperature Ultra-Efficiency Box Air Filters

These filters stand up to the heat while capturing viruses, fine allergens, and even wildfire smoke and heavy pollution. They won't break down in temperatures up to 900°F, and they can also withstand airflow fluctuations, like those in variable air volume systems.

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



	12 × 24	14	900	UL 900	8231T42	0000000


	24 × 24	14	900	UL 900	8231T41	000000

Odor-Removing Box Air Filters

Carbon granules absorb odors. The rigid frame won’t bend or twist from sudden changes in airflow, such as those created by variable air volume systems. For a long service life, the V-shape design increases the filtering area and reduces resistance to air.

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



	12 × 24	8	46	130	5451N14	000000000


	24 × 24	8	46	130	5451N13	00000000