The heavy duty aluminum frame with water drain holes makes for easy cleaning.
The electrostatic materials we use capture dust, dirt, pollen, pet dander, allergens, pet hair, and other household irritants. These filters should be washed every 3 months, and more frequently if you have many pets. Electrostatic Filter for Home Furnaces - Washable - 16 x 16 x 1 This filter's dimensions measure 16 x 16 x 1.This electrostatic furnace filter is a permanent filter which will last for years with proper care.