17x21x1 HVAC, Furnace, AC and Heat Pump Filters

Last stock, all sales final. This filter is discontinued by the manufacturer AAF Flanders. The recommended replacement is the EZ Flow II Filters. C...

Heavy-Duty Construction The EZ Flow II filter frame is made from heavy chipboard in a one-piece design that eliminates corner separation. The filte...

The NaturalAire Standard air filter removes dramatically more potentially harmful airborne particles, compared to basic fiberglass air filters. It ...

17 x 21 x 1 pleated filters in the the exact size of 17 x 21 x 1. Upgrade your HVAC system with Exact Filters! Say goodbye to the frustration of fi...

17 x 21 x 1 basic filters in the the exact size of 17 x 21 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leading man...

17x21x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home or of...

17x21x1 Upgrade your HVAC system with Exact Filters! Say goodbye to the frustration of finding the right fit for your furnace, AC, heat pump, or HV...