MERV 3 Air Filters | McMaster-Carr

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MERV Filter Rating

Not Rated

Color

Blue

HVAC Filter Trade Size

System of Measurement

Inch

Thickness

For Removing

Dust

Particles

Reusable

Yes

Export Control Classification Number (ECCN)

EAR99

Material

Plastic Fiber

Air Filter Performance

Low Efficiency

Construction

Unpleated

Removes Particle Size Down To

Less than 25 μm

Filter Efficiency @ 3 Microns

Width

Length

Application

Filter Efficiency

Filtering Method

Sold As

Performance

For Use With

Form

Certification

DFARS Specialty Metals

REACH

RoHS

6 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.

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



	12 × 24	3	180	UL Classified	25	00000000	0000000


	16 × 20	3	180	UL Classified	25	00000000	000000
	20 × 20	3	180	UL Classified	25	00000000	000000
	20 × 25	3	180	UL Classified	25	00000000	000000
	20 × 30	3	180	UL Classified	25	00000000	000000
	24 × 24	3	180	UL Classified	25	00000000	000000