36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] w26h26 Design – removable door/face for

Design – removable door/face for easy filter change & cleaning - uses a 1" thick filter

+ Product Details Size - 4"w X 16"h is the size for the duct opening measurement only

Achieve the perfect airflow with adjustable control by rotating the middle disk

+ Product Details Size - 25"w X 34"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 10"h is the size for the duct opening measurement only

36" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 22 5/8"] w26h26 Design – removable door/face for+ Product Details Size 36"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 22 5 8" height 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. Our filter grille latch is easy to use on