Gree Ga Series Ptac Replacement Air Filters. The Filters Save Energy By Preventing The Indoor Evaporator Coil From Being Plugged with Dirt and Lint. These Economical and Sturdy Molded Filters Are Interchangeable and May Be Washed, Vacuumed, and Reused. Filters Are Made Of and Washable Nylon Mesh Material. (2 Per Pack)