• Washable Air Filter(16" x 20" x 1"), Aluminum Electrostatic Air Filter for Furnace and Central Air Conditioner KWD 17
• wioAIR Washable Air Filter(20" x 20" x 1"), Aluminum Electrostatic Air Filter for Furnace and Central Air Conditioner KWD 18
• Washable Electrostatic Furnace Air Filter, MERV 8, (12" x 12" x 1") Aluminum Reusable Filter for Furnace, Central AC, and HVAC System KWD 13.500