Electrostatic Filter for Home Furnaces Washable

Duraflow Filtration’s DEF20361 electrostatic furnace filter is a permanent filter which will last for years with proper care. The heavy duty aluminum frame with water drain holes makes for easy cleaning. These filters should be washed every 3 months, and more frequently if you have many pets. This filter’s dimensions measure 20 x 36 x 1. Merv8 rated.