Custom Air Filters | McMaster-Carr

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Removes Particle Size Down To

38 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.

Made-to-Order Heavy Duty Reusable Metal Panel Filters

We can get you any size filter. Multiply the length × width to determine square inches. Then, see size ranges for pricing.

These filters are also known as metal mesh filters. With a frame made of a thick gauge metal, they are durable. These frames can be washed and reused.

Filters meet UL 900 flame retardance requirements.

Also Available: Filters larger than 599 square inches. Please ask for 2150K999 and specify thickness, actual length, and actual width.

1/2" Thick
Filter Area, sq. in.	MERV Filter Rating	Removes Particle Size Down To, microns	Material	Frame Gauge	Max. Temperature, °F		Each
1-299	4	10	Aluminum	18	240°	0000000	000000
300-599	4	10	Aluminum	18	240°	0000000	00000
1" Thick
1-299	4	10	Aluminum	18	240°	0000000	00000
300-599	4	10	Aluminum	18	240°	0000000	00000
2" Thick
1-299	4	10	Aluminum	18	240°	0000000	00000
300-599	4	10	Aluminum	18	240°	0000000	00000

Made-to-Order Pleated Panel Air Filters

Minimum filter size is 6" × 6". Maximum filter size is 23" × 30". Multiply the length × width to determine square inches. Then, see size ranges for pricing.

Filters have pleats that create a large surface area for filtering without reducing airflow. They are typically used as replacement filters in HVAC equipment. The cardboard frame is treated to resist humidity, and the galvanized steel grill prevents sagging.

They meet UL 900 flame retardance requirements.

Also Available: Filters larger than 23" × 30". Please ask for 3923T999 and specify material, thickness, actual length, and actual width.

		Filter Efficiency @
Filter Area, sq. in.	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temp., °F	Pkg. Qty.		Pkg.
1" Thick
36-149	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	0000000
150-199	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
200-249	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
250-299	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
300-399	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
400-499	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
500-599	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
600-690	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
2" Thick
36-149	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
150-199	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
200-249	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
250-299	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
300-399	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
400-499	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
500-599	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000
600-690	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	12	0000000	000000

Made-to-Order Panel Air Filters

Minimum filter size is 4" × 4". Maximum filter size is 23" × 30". Multiply the length × width to determine square inches. Then, see size ranges for pricing.

Typically used as replacements in HVAC equipment, these filters work as a standalone filter or a prefilter that guards your main filter. They’re an economical choice for protecting expensive filters that catch fine particles.

All meet UL Classified flame retardance requirements.

Also Available: Filters larger than 23" × 30". Please ask for 3884T999 and specify material, thickness, actual length, and actual width.

1" Thick
Filter Area, sq. in.	MERV Filter Rating	Material	Frame Material	Max. Temperature, °F	Pkg. Qty.		Pkg.
16-149	5	Fiberglass	Cardboard	180°	12	0000000	000000
150-199	5	Fiberglass	Cardboard	180°	12	0000000	00000
200-249	5	Fiberglass	Cardboard	180°	12	0000000	00000
250-299	5	Fiberglass	Cardboard	180°	12	0000000	000000
300-399	5	Fiberglass	Cardboard	180°	12	0000000	000000
400-499	5	Fiberglass	Cardboard	180°	12	0000000	000000
500-599	5	Fiberglass	Cardboard	180°	12	0000000	000000
600-690	5	Fiberglass	Cardboard	180°	12	0000000	000000
2" Thick
16-149	5	Fiberglass	Cardboard	180°	12	0000000	00000
150-199	5	Fiberglass	Cardboard	180°	12	0000000	000000
200-249	5	Fiberglass	Cardboard	180°	12	0000000	000000
250-299	5	Fiberglass	Cardboard	180°	12	0000000	000000
300-399	5	Fiberglass	Cardboard	180°	12	0000000	000000
400-499	5	Fiberglass	Cardboard	180°	12	0000000	000000
500-599	5	Fiberglass	Cardboard	180°	12	0000000	000000
600-690	5	Fiberglass	Cardboard	180°	12	0000000	000000