Airguard Fresh Air Carbon Pleated Filters: 18x20x2 - Air Filter Sales
MERV rating - Air Filter Sales
AirGuard Pleated Filters 20 x 20 x 1 MERV 8 Case of 12 Affordable 20 x 20 x 1 MERV 8 Pleated Filters [0474703] : HVAC Parts Online, Heating and Air Conditioning Parts