Description
Actual size is 20.75 x 20.63 x 5. Accumulair brand: 20x21x5 Electro-Air F825-0337 compatible whole house air filters, specifically built to be an alternative to the original brand Electro-Air F825-0337 filters. Fully box-formed so no forming or combs needed. MERV classified to ASHRAE standards establishing performance equal to the name brand Electro-Air F825-0337 air filter. Note: Example air filter picture displayed is not the actual dimensions and is included to show construction only. OEM names and Electro-Air F825-0337 part numbers are listed for filter substitution identification purposes only.