36" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 24 5/8"] white Horizontal performance assures confident use

Horizontal performance assures confident use of cooling temperature differential of 30 degrees Fahrenheit and greater

actual front end outer dimensions are approximately 36 5/8" width X 24 5/8" height

See our separate listing for Butterfly Dmaper to Control Airflow

+ Product Details Size - 22"w X 6"h is the size for the duct opening measurement only

36" X 22" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 24 5/8"] white Horizontal performance assures confident use+ Product Details Size 36"w X 22"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 24 5 8" height Actual Filter Size 35 3 4"w x 21 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.