36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Round Pipe Designed for optimal airflow and

Designed for optimal airflow and lasting durability

75"H – fits a 20" X 4" duct opening

actual front end outer dimensions are approximately 22 5/8" width X 22 5/8" height

our damper is designed to perfectly align with your setup

it’s far from ideal replacing refrigeration or HVAC line set covers without a good old reliable line set cutter

36" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Round Pipe Designed for optimal airflow and+ Product Details Size 36"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 27 5 8" height Actual Filter Size 35 3 4"w x 24 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter.