Aerostar 20x25x4 MERV 8 Air Filter, 6 Count, ACTUAL SIZE (19.50 x 24.50 x 3.7…
They also improve the efficiency of your HVAC unit and therefore reduce maintenance and utility costs, by removing dirt and reducing strain on the motor. Compatible with furnaces and AC units. Reducing strain on your HVAC system for consistent performance and energy savings.