18x36x1 HVAC, Furnace, AC and Heat Pump Filters

18 x 36 x 1 pleated filters in the the exact size of 18 x 36 x 1. Upgrade your HVAC system with Exact Filters! Say goodbye to the frustration of fi...

18x36x1 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...

18x36x1 Exact Pleated MERV 13 Filters (12-pack). These high-quality filters are designed to provide exceptional air filtration for your home or of...

18 x 36 x 1 basic filters in the the exact size of 18 x 36 x 1. Finding the perfect fit filter isn't always easy so we teamed up with a leading man...