14 × 25 Filters | McMaster-Carr

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

These filters meet UL 900 flame retardance requirements. Actual size is up to 5/8” less than trade size.

Don’t see the size you need? Additional sizes are available.

1" Thick

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temp., °F		Pkg.
Pkg. of 2
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	000000
Pkg. of 12
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	00000

2" Thick

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temp., °F		Pkg.
Pkg. of 2
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	000000
Pkg. of 12
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	00000

4" Thick

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temp., °F		Pkg.
Pkg. of 2
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	000000
Pkg. of 6
14 × 25	8	44%	73%	3	Polyester Plastic/Polyethylene Plastic Blend	Cardboard	180°	00000000	000000

Mildew-Resistant Pleated Panel Air Filters

A compound inhibits mildew and mold growth. All of these filters have pleats that create a large surface area for filtering without reducing airflow. They meet UL 900 flame retardance requirements. Actual size is up to 5/8” less than trade size.

Product registration requirements restrict sales to the listed areas.

1" Thick

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Frame Material	Max. Temperature, °F	Cannot Be Sold To		Pkg.
Pkg. of 1
Synthetic Fiber
14 × 25	8	20%	70%	3	Cardboard	150°	Canada	00000000	000000
Pkg. of 12
Synthetic Fiber
14 × 25	8	20%	70%	3	Cardboard	150°	Canada	00000000	000000

2" Thick

		Filter Efficiency @
HVAC Filter Trade Size	MERV Filter Rating	1 Micron	3 Microns	Removes Particle Size Down To, microns	Frame Material	Max. Temperature, °F	Cannot Be Sold To		Pkg.
Pkg. of 1
Synthetic Fiber
14 × 25	8	20%	70%	3	Cardboard	150°	Canada	00000000	000000
Pkg. of 12
Synthetic Fiber
14 × 25	8	20%	70%	3	Cardboard	150°	Canada	00000000	000000

Panel Air Filters

These filters are typically used as replacements in HVAC equipment.

All meet UL Classified flame retardance requirements. Actual size is up to 5/8” more or less than trade size.

Prefilters can be used 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.

Prefilters
HVAC Filter Trade Size	MERV Filter Rating	Filter Efficiency @ 3 Microns	Removes Particle Size Down To, microns	Material	Frame Material	Max. Temp., °F	Pkg. Qty.		Pkg.
1" Thick
14 × 25	5	20%	3	Fiberglass	Cardboard	180°	12	00000000	000000
2" Thick
14 × 25	5	20%	3	Fiberglass	Cardboard	180°	12	00000000	00000

Heavy Duty Reusable Metal Panel Filters

With a frame made of a thick gauge metal, these filters are durable. They can be washed and reused. Also known as metal mesh filters.

All meet UL 900 flame retardance requirements.

Don’t see the size you need? Additional sizes are available.

1" Thick
HVAC Filter Trade Size	MERV Filter Rating	Removes Particle Size Down To, microns	Material	Frame Gauge	Max. Temperature, °F		Each
14 × 25	4	10	Aluminum	18	240°	0000000	000000

Ultra-Efficiency Panel Air Filters

Rated MERV 13, these filters capture particles down to 0.3 microns. Use in data centers, hospitals, and other locations that require extra-clean air. These filters have pleats that create a large surface area for filtering without reducing airflow. The cardboard frame is treated to resist humidity, and the galvanized steel grill prevents sagging.

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

1" Thick

		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. Temp., °F		Pkg.
Pkg. of 2
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000
Pkg. of 12
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000

2" Thick

		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. Temp., °F		Pkg.
Pkg. of 2
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000
Pkg. of 12
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000

4" Thick

		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. Temp., °F		Pkg.
Pkg. of 2
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000
Pkg. of 6
14 × 25	13	50%	85%	90%	0.3	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000

High-Efficiency Panel Air Filters

Rated MERV 11, these filters capture particles down to 1 micron. Use in data centers and other locations that require extra-clean air. These filters have pleats that create a large surface area for filtering without reducing airflow. The cardboard frame is treated to resist humidity, and the galvanized steel grill prevents sagging.

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

1" Thick

		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		Pkg.
Pkg. of 2
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	0000000	000000
Pkg. of 12
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	000000	000000

2" Thick

		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. Temp., °F		Pkg.
Pkg. of 2
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	0000000	000000
Pkg. of 12
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	0000000	000000

4" Thick

		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. Temp., °F		Pkg.
Pkg. of 2
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000
Pkg. of 6
14 × 25	11	20%	65%	85%	1	Polyethylene Plastic/Polypropylene Plastic Blend	Cardboard	150°	00000000	000000

Frames for Panel Air Filters

Hold panel filters in place. The frames can be welded together to hold multiple filters. The trade size is the actual size of the frame.

Add clips to attach frames to 1" or 4" filters.

Frames

Frame

Replacement Retaining Clip

Frames								Replacement Retaining Clips
For HVAC Filter Trade Size	For Filter Thick.	Frame Material	Frame Gauge	Mounting Hardware Included	Includes		Each	Pkg. Qty.		Pkg.
14 × 25	2"	Galvanized Steel	16	Yes	Retaining Clips, Sealing Gasket	000000000	000000	2	00000000	00000

Optional Clips

Optional Clip

For Filter Thickness	Material	Pkg. Qty.		Pkg.
1"	Galvanized Steel	2	00000000	00000
4"	Galvanized Steel	2	00000000	0000

Reusable Air Filter Pads

Wash and reuse these pads. Cut to the size you need.

These pads meet UL 900 flame retardance requirements.

Polyester pads require no frame—rigid polyester is firm enough to be used without one.

Polyester Plastic

1/2" Thick
HVAC Filter Trade Size	MERV Filter Rating	Filter Efficiency @ 3 Microns	Removes Particle Size Down To, microns	Material	Color	Maximum Temperature	Pkg. Qty.		Pkg.
14 × 25	5	20%	3	Polyester Plastic	Blue	225° F	5	00000000	000000
1" Thick
14 × 25	6	35%	3	Polyester Plastic	Blue	225° F	5	00000000	00000

Odor-Removal Air Filter Pads

With a higher carbon concentration than odor-removal air filter rolls, these pads handle heavier odors. Cut to the size you need; frames are sold separately.

All meet UL 900 flame retardance requirements.

							300 g/sq. ft. Carbon Concentration
HVAC Filter Trade Size	MERV Filter Rating	Filter Efficiency @ 3 Microns	Removes Particle Size Down To, microns	Material	Color	Max. Temperature, °F		Each
1" Thick
14 × 25	7	50%	3	Carbon-Filled Polyester Plastic	Black	120°	0000000	000000