Description
Actual dimensions are 20.75 x 20.63 x 5. Brand: Accumulair. 20x21x5 Electro-Air F8110321 compatible whole house filters, specifically constructed to be an alternative to the OEM Electro-Air F8110321 filters. Fully box-formed so no forming or combs needed. MERV classified to ASHRAE 52.2 test grades assuring particulate filtration as good or better than the original brand Electro-Air F8110321 air filter. Notice: The example air filter picture shown is not the actual dimensions and is included to show design only. Trade names and Electro-Air F8110321 part numbers shown for air filter substitution purposes.