This 20x25x4 air filter is an extended surface pleated filter, which outpaces ordinary air filters with medium efficiency, and are designed for lower pressure drop, and extended service life, which reduces HVAC equipment maintenance and energy expenses. Our 20x25x4 air filter is rated to ASHRAE test standards 52.2, which ensures that the air filter will function as good or better than original brand 20 x 25 x 4 air filter.
- 20x25x4 nominal size.
- 19.625x24.625x3.5 actual size.
- Pleated design.
MERV classified to ASHRAE ratings.
- 1721 cfm flow rate.
- 6 air filters per case.