MERV 14 Filters | McMaster-Carr

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Removes Particle Size Down To

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21 Products

About Air Filter Efficiency Ratings

The rigid frame on these filters withstands fluctuations in airflow, such as those created by variable air volume systems.

MERV 14 filters provide a higher level of filtration than MERV 11 filters and are more effective at capturing finer allergens and viruses for an enhanced level of protection. These filters are often used in environments to protect against airborne contaminants from wildfire smoke and in regions with high pollution levels.

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

Bag Air Filters

The deep pockets on these filters maximize filtering surface area with minimal airflow resistance. Actual size is 5/8” less than trade size.

		Filter Efficiency @
HVAC Filter Trade Size	Dp.	0.3 Microns	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temperature, °F		Each
MERV 14
20 × 20	15"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	000000
20 × 20	22"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000
20 × 24	15"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000
20 × 24	22"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000
24 × 24	15"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000
24 × 24	22"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000
24 × 24	30"	75%	90%	95%	0.3	Polypropylene Plastic	Galvanized Steel	175°	000000000	00000