MERV 14 Air Filters | McMaster-Carr

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HVAC Filter Trade Size

Filter Type

MERV Filter Rating

System of Measurement

Thickness

For Removing

Frame Material

Filter Efficiency

Material

Application

Air Filter Performance

Ultra Efficiency

Filter Efficiency @ 0.3 Microns

75%

Filter Efficiency @ 3 Microns

Maximum Temperature

Depth

Removes Particle Size Down To

Less than 50 μm

Filter Efficiency @ 1 Microns

Filtering Method

Construction

Reusable

For Use With

Air

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

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

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22 Products

About Air Filter Efficiency Ratings

Compare MERV rating, efficiency, and particle size to find the right filter for your location—from warehouses and offices to hospitals and labs.

Filter Type

Box

The rigid frame withstands changes in airflow

15 products

Bag

Trap more dust and last longer than panel filters

7 products

Performance

Long Life

Extend time between filter changes

7 products

High Temperature

Endure high temperatures without breaking down

2 products

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

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

Ultra-Efficiency Pocket Air Filters

Capture more viruses and finer allergens than high-efficiency pocket air filters. The deep pockets maximize filtering surface area with minimal airflow resistance.

	MERV Filter Rating	Max. Temp., ° F		Each
15" Deep



	20 × 20	14	175	22905K743	000000


	20 × 24	14	175	22905K747	00000
	24 × 24	14	175	22905K751	00000


	22" Deep



			20 × 20	14	175	22905K744	00000


			20 × 24	14	175	22905K748	00000
			24 × 24	14	175	22905K752	00000


			30" Deep



					24 × 24	14	175	22905K754	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