Filtrete 1-in 5 MERV Basic Pleated Air Filter FBL

The Filtrete 17.5×23.5×1 Basic Air Filter, made by 3M, helps capture unwanted particles from your household air to contribute to a cleaner, fresher home environment. Use a 3-month pleated 1-inch home air filter in your furnace, air conditioner or HVAC system. For optimal performance of your heating and cooling system or HVAC system, change your furnace filter at least every 90 days.