Description
Actual Size: 17.25 x 20.75 x 4.38. Accumulair brand 17.5x21x4.5 Ruud Protech 540016 replacement whole house air filters, exactly designed to substitute for the OEM Ruud Protech 540016 filters. Fully assembled so no forming or combs required. MERV graded to ASHRAE grades ensuring particle filtration to the level of the original manufacturer Ruud Protech 540016 air filter. Notice: The sample filter pic as displayed is not true to size and is displayed for construction purposes. Trade names and Ruud Protech 540016 P/N included for filter style identification use.