About Air Filter Efficiency Ratings
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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 @ | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 | |||||||||
24 × 36 | 8 | 44% | 73% | 3 | Polyester Plastic/Polyethylene Plastic Blend | Cardboard | 180° | 00000000 | 000000 |
Pkg. of 12 | |||||||||
24 × 36 | 8 | 44% | 73% | 3 | Polyester Plastic/Polyethylene Plastic Blend | Cardboard | 180° | 00000000 | 00000 |
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 | |||||||||
24 × 36 | 8 | 44% | 73% | 3 | Polyester Plastic/Polyethylene Plastic Blend | Cardboard | 180° | 00000000 | 000000 |
Pkg. of 12 | |||||||||
24 × 36 | 8 | 44% | 73% | 3 | Polyester Plastic/Polyethylene Plastic Blend | Cardboard | 180° | 00000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
Particleboard Frame | |||||
---|---|---|---|---|---|
HVAC Filter Trade Size | Filter Efficiency @ 0.3 Microns | Removes Particle Size Down To, microns | Material | Each | |
3" Thick | |||||
24 × 36 | 99.97% | 0.3 | Fiberglass | 0000000 | 0000000 |