Description
Actual Size: 19.5 x 19.5 x 3.75. Accumulair brand: 20x20x4 White-Rodgers FR1600M-111 substitute whole house air filters, exactly designed to replace OEM White-Rodgers FR1600M-111 air filters. Completely box-formed - no assembly or combs required. MERV graded to ASHRAE 52.2 test standards establishing particulate capture as good or better than the original brand White-Rodgers FR1600M-111 filters. Photo: The sample filter pic as displayed is not true to size and is there to show design only. Trade names and White-Rodgers FR1600M-111 part numbers included for filter style purposes only.