Description
Actual dimensions are 20.75 x 20.25 x 5.25. Brand: Accumulair. 20x20x5 Westinghouse MU2020 replacement whole house filters, specifically constructed to replace the name brand Westinghouse MU2020 air filters. Completely box-formed - no forming or combs needed. MERV graded to ASHRAE 52.2 test grades establishing particle filtration as good or better than the original brand Westinghouse MU2020 filter. Photo: Example air filter pic displayed is not the actual dimensions and is included to show construction purposes. Name brands and Westinghouse MU2020 identifier are used for air filter substitution identification purposes.