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About Air Filter Efficiency Ratings
More
Pleated Panel Air Filters

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.
For technical drawings and 3-D models, click on a part number.
Filter Efficiency @ | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
12 × 12 | 9 | 35% | 75% | 3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | |||||||||
12 × 12 | 9 | 35% | 75% | 3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 00000 |
Filter Efficiency @ | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
12 × 12 | 9 | 35% | 75% | 3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | |||||||||
12 × 12 | 9 | 35% | 75% | 3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 00000 |
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” 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.
For technical drawings and 3-D models, click on a part number.
Trade Size | MERV Filter Rating | Filter Efficiency @ 3 Microns | Removes Particle Size Down To, microns | Material | Frame Material | Max. Temp., °F | Pkg. Qty. | Pkg. | |
Prefilters | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/2" Thick | |||||||||
12 × 12 | 5 | 20% | 3 | Fiberglass | Cardboard | 180° | 12 | 00000000 | 000000 |
1" Thick | |||||||||
12 × 12 | 5 | 20% | 3 | Fiberglass | Cardboard | 180° | 12 | 00000000 | 00000 |
2" Thick | |||||||||
12 × 12 | 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. Actual size is up to 1/2" less than trade size.
Don’t see the size you need? Additional sizes are available.
For technical drawings and 3-D models, click on a part number.
Reusable Metal Panel Filters

Also known as metal mesh filters. These filters can be washed and reused.
These filters meet UL 900 flame retardance requirements. Actual size is up to 1/2" less than trade size.
For technical drawings and 3-D models, click on a part number.
Trade Size | Material | Frame Gauge | Max. Temperature, °F | Each | |
1" Thick | |||||
---|---|---|---|---|---|
12 × 12 | Aluminum | 24 | 240° | 0000000 | 000000 |
Reusable Electrostatic Panel Air Filters

An inherent electrostatic charge attracts dust and particles to these filters. They can be washed and reused.
These filters meet UL 900 flame retardance requirements. Actual size is up to 1/2" less than trade size.
For technical drawings and 3-D models, click on a part number.
Trade Size | MERV Filter Rating | Filter Efficiency @ 3 Microns | Removes Particle Size Down To, microns | Material | Frame Material | Max. Temperature, °F | Each | |
1" Thick | ||||||||
---|---|---|---|---|---|---|---|---|
12 × 12 | 6 | 35% | 3 | Polypropylene Plastic/Polyester Plastic Blend | Galvanized Steel | 180° | 0000000 | 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.
For technical drawings and 3-D models, click on a part number.
Filter Efficiency @ | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
12 × 12 | 11 | 20% | 65% | 85% | 1 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | ||||||||||
12 × 12 | 11 | 20% | 65% | 85% | 1 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Filter Efficiency @ | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
12 × 12 | 11 | 20% | 65% | 85% | 1 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | ||||||||||
12 × 12 | 11 | 20% | 65% | 85% | 1 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 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.
For technical drawings and 3-D models, click on a part number.
Filter Efficiency @ | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
12 × 12 | 13 | 50% | 85% | 90% | 0.3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | ||||||||||
12 × 12 | 13 | 50% | 85% | 90% | 0.3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Filter Efficiency @ | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||
12 × 12 | 13 | 50% | 85% | 90% | 0.3 | Polyethylene Plastic/Polypropylene Plastic Blend | Cardboard | 150° | 00000000 | 000000 |
Pkg. of 12 | ||||||||||
12 × 12 | 13 | 50% | 85% | 90% | 0.3 | 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.
For technical drawings and 3-D models, click on a part number.
Air Filter Pads

Cut these pads to the size you need; frames are sold separately.
All meet UL Classified flame retardance requirements.
Pads with a tacky surface retain particles better than other pads. They are blue on one side and white on the other.
Prefilter Air Filter Pads

These pads are an economical choice for protecting more expensive filters that catch finer particles. Cut to the size you need; frames are sold separately.
Pads meet UL 900 flame retardance requirements.
Trade Size | MERV Filter Rating | Filter Efficiency @ 3 Microns | Removes Particle Size Down To, microns | Material | Color | Max. Temperature, °F | Pkg. | |
Pkg. of 6 | ||||||||
---|---|---|---|---|---|---|---|---|
1" Thick | ||||||||
12 × 12 | 6 | 35% | 3 | Fiberglass | White | 250° | 00000000 | 000000 |
2" Thick | ||||||||
12 × 12 | 6 | 35% | 3 | Fiberglass | White | 250° | 00000000 | 00000 |
Pkg. of 50 | ||||||||
1" Thick | ||||||||
12 × 12 | 6 | 35% | 3 | Fiberglass | White | 250° | 00000000 | 000000 |
2" Thick | ||||||||
12 × 12 | 6 | 35% | 3 | Fiberglass | White | 250° | 00000000 | 000000 |
Mildew-Resistant Reusable Air Filter Pads

Wash and reuse these lightweight filter pads that resist mildew growth. Cut to the size you need; frames are sold separately.
Pads with more pores per inch catch smaller particles than pads with fewer pores per inch.
These pads meet UL 900 flame retardance requirements.
Trade Size | Material | Color | Max. Temperature, °F | Pores Per Inch | Each | |
1/8" Thick | ||||||
---|---|---|---|---|---|---|
12 × 12 | Polyurethane Foam | Gray | 250° | 00000000 | 00000 | |
1/4" Thick | ||||||
12 × 12 | Polyurethane Foam | Gray | 250° | 00000000 | 0000 | |
1/2" Thick | ||||||
12 × 12 | Polyurethane Foam | Gray | 250° | 00000000 | 0000 | |
1" Thick | ||||||
12 × 12 | Polyurethane Foam | Gray | 250° | 00000000 | 00000 | |
2" Thick | ||||||
12 × 12 | Polyurethane Foam | Gray | 250° | 00000000 | 00000 |
Reusable Air Filter Pads

Wash and reuse these pads. Cut to the size you need. No frame needed—rigid polyester is firm enough to be used without one.
Pads meet UL 900 flame retardance requirements.
Trade Size | MERV Filter Rating | Filter Efficiency @ 3 Microns | Removes Particle Size Down To, microns | Material | Color | Max. Temp., °F | Pkg. Qty. | Pkg. | |
1/2" Thick | |||||||||
---|---|---|---|---|---|---|---|---|---|
12 × 12 | 5 | 20% | 3 | Polyester Plastic | Blue | 225° | 5 | 00000000 | 000000 |
1" Thick | |||||||||
12 × 12 | 6 | 35% | 3 | Polyester Plastic | Blue | 225° | 5 | 00000000 | 00000 |
2" Thick | |||||||||
12 × 12 | __ | __ | __ | Polyester Plastic | Green | 200° | 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.
Pads with a carbon concentration of 375 g/sq. ft. provide greater odor control than other pads and can handle ammonia, hydrogen sulfide, and other gases. They are often used in hospitals and laboratories.
Trade Size | MERV Filter Rating | Filter Efficiency @ 3 Microns | Removes Particle Size Down To, microns | Material | Color | Max. Temperature, °F | Each | |
300 g/sq. ft. Carbon Concentration | ||||||||
---|---|---|---|---|---|---|---|---|
1" Thick | ||||||||
12 × 12 | 7 | 50% | 3 | Carbon-Coated Polyester Plastic | Black | 120° | 0000000 | 000000 |
375 g/sq. ft. Carbon Concentration | ||||||||
1" Thick | ||||||||
12 × 12 | 7 | 50% | 3 | Carbon-Coated Polyester Plastic | Black | 120° | 0000000 | 00000 |
HEPA Box Air Filters

Control dust and contaminants in hospitals, laboratories, and other demanding environments. These filters have a rigid frame that withstands fluctuations in airflow, such as those created by variable air volume systems. The sealing gasket is on the downstream side of the filter.
The trade size is the actual size of the filter.
UL Classified-rated filters meet flame retardance requirements.
For technical drawings and 3-D models, click on a part number.
Trade Size | Filter Efficiency @ 0.3 Microns | Removes Particle Size Down To, microns | Material | Specifications Met | Each | |
Particleboard Frame | ||||||
---|---|---|---|---|---|---|
3" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | __ | 0000000 | 0000000 |
5 3/4" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | UL Classified | 0000000 | 000000 |
Aluminum Frame | ||||||
2 3/4" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | UL 900 | 000000 | 000000 |
Galvanized Steel Frame | ||||||
5 7/8" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | UL 900 | 000000 | 000000 |
Stainless Steel Frame | ||||||
2 3/4" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | UL 900 | 0000000 | 000000 |
5 7/8" Thick | ||||||
12 × 12 | 99.97% | 0.3 | Fiberglass | UL 900 | 0000000 | 000000 |