Box Air Filters | McMaster-Carr

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	Filter Style Filter Style	Show

	Box

	Filter Style Filter Style	Hide


Panel	Roll

Pad	Box

Bag	Cartridge

	Trade Size Trade Size

	System of Measurement System of Measurement

Inch

	Thickness Thickness

	Frame Material Frame Material

	MERV Filter Rating MERV Filter Rating

	Removes Particle Size Down To Removes Particle Size Down To

Less than 25 microns

	For Removing For Removing

Dust and Particles

	Maximum Temperature Maximum Temperature

150° to 199.9° F

500° F or greater

	For Use With For Use With

Air

	Filter Efficiency @ 0.3 Microns Filter Efficiency @ 0.3 Microns

20%

75%

99.97%

	Number of Panels Number of Panels

	Useful Life Useful Life

Disposable

	Material Material

Fiberglass

	Construction Construction

Pleated

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Filter Efficiency @ 3 Microns Filter Efficiency @ 3 Microns

85%

95%

	Filter Efficiency @ 1 Micron Filter Efficiency @ 1 Micron

65%

90%

	Specifications Met Specifications Met

UL 900

UL Classified

	Air Filter Performance Air Filter Performance

High-Efficiency Air Filter
(HEPA)

	Air Filter Performance Air Filter Performance

General Purpose Air Filter

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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About Air Filter Efficiency Ratings

Control dust and contaminants in hospitals, laboratories, and other demanding environments. These filters have a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems. The sealing gasket is on the downstream side of the filter.

The trade size is the actual size of the filter.

UL Classified-rated filters meet flame retardance requirements.

For technical drawings and 3-D models, click on a part number.

Particleboard Frame
HVAC Filter Trade Size	Filter Efficiency @ 0.3 Microns	Removes Particle Size Down To, microns	Material	Specifications Met		Each
3" Thick
12 × 12	99.97%	0.3	Fiberglass	__	0000000	0000000
12 × 24	99.97%	0.3	Fiberglass	__	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	__	0000000	000000
24 × 36	99.97%	0.3	Fiberglass	__	0000000	000000
5 3/4" Thick
8 × 8	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
12 × 12	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
12 × 24	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
11 1/2" Thick
12 × 24	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
23 3/8 × 23 3/8	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
24 × 30	99.97%	0.3	Fiberglass	UL Classified	0000000	000000
Aluminum Frame
2 3/4" Thick
12 × 12	99.97%	0.3	Fiberglass	UL 900	000000	000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	000000	000000
Galvanized Steel Frame
5 7/8" Thick
8 × 8	99.97%	0.3	Fiberglass	UL 900	000000	000000
12 × 12	99.97%	0.3	Fiberglass	UL 900	000000	000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	000000	000000
11 1/2" Thick
23 3/8 × 23 3/8	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 × 30	99.97%	0.3	Fiberglass	UL 900	0000000	000000
Stainless Steel Frame
2 3/4" Thick
12 × 12	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	0000000	000000
5 7/8" Thick
8 × 8	99.97%	0.3	Fiberglass	UL 900	0000000	000000
12 × 12	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	0000000	000000
11 1/2" Thick
23 3/8 × 23 3/8	99.97%	0.3	Fiberglass	UL 900	0000000	00000000
24 x 12	99.97%	0.3	Fiberglass	UL 900	0000000	000000
24 × 24	99.97%	0.3	Fiberglass	UL 900	0000000	00000000
24 × 30	99.97%	0.3	Fiberglass	UL 900	0000000	00000000

Ultra-Efficiency Box Air Filters

These MERV 14 air filters capture particles down to 0.3 microns. They have a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems.

Filters meet UL 900 flame retardance requirements. Actual size is up to 5/8" less than trade size.

For technical drawings and 3-D models, click on a part number.

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	0.3 Microns	1 Micron	3 Microns	Removes Particle Size Down To, microns	Frame Material	Max. Temperature, °F		Each
6" Thick
Fiberglass
12 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	0000000
20 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	000000
24 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	000000
12" Thick
Fiberglass
12 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	000000
20 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	000000
24 × 24	14	75%	90%	95%	0.3	Galvanized Steel	180°	0000000	000000
Aluminized Fiberglass
12 × 24	14	75%	90%	95%	0.3	Aluminized Steel	900°	0000000	000000
20 × 24	14	75%	90%	95%	0.3	Aluminized Steel	900°	0000000	000000
24 × 24	14	75%	90%	95%	0.3	Aluminized Steel	900°	0000000	000000

Long-Life Ultra-Efficiency Box Air Filters

Four Panels

Eight Panels

Multiple panels maximize filtering surface area for long service life. These MERV 14 air filters capture particles down to 0.3 microns. They have a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems.

Actual size is up to 5/8" less than trade size.

Eight-panel filters have more surface area than four-panel filters for an even longer service life.

For technical drawings and 3-D models, click on a part number.

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	0.3 Microns	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temperature, °F		Each
4 Panels
12" Thick
12 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000
20 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000
24 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000
8 Panels
12" Thick
12 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000
20 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000
24 × 24	14	75%	90%	95%	0.3	Fiberglass	Plastic	180°	0000000	000000

High-Efficiency Box Air Filters

Rated MERV 11, these air filters capture particles down to 1 micron. They have a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems.

Filters meet UL 900 flame retardance requirements. Actual size is up to 5/8" less than trade size.

For technical drawings and 3-D models, click on a part number.

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	0.3 Microns	1 Micron	3 Microns	Removes Particle Size Down To, microns	Frame Material	Max. Temperature, °F		Each
6" Thick
Fiberglass
12 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	0000000
20 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	000000
24 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	000000
12" Thick
Fiberglass
12 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	000000
20 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	000000
24 × 24	11	20%	65%	85%	1	Galvanized Steel	180°	0000000	000000
Aluminized Fiberglass
12 × 24	11	20%	65%	85%	1	Aluminized Steel	900°	0000000	000000
20 × 24	11	20%	65%	85%	1	Aluminized Steel	900°	0000000	000000
24 × 24	11	20%	65%	85%	1	Aluminized Steel	900°	0000000	000000

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About Air Filter Efficiency Ratings

HEPA Box Air Filters

Ultra-Efficiency Box Air Filters

Long-Life Ultra-Efficiency Box Air Filters

High-Efficiency Box Air Filters