36" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 8 5/8"] 8" Diameter accordion dd { margin: 0

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our damper is designed to perfectly align with your setup

+ Product Details Size – 3"w X 10"h or 10"w X 3"h is the size for the duct opening measurement only

75" width X 9

36" X 6" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 38 5/8" X 8 5/8"] 8" Diameter accordion dd { margin: 0+ Product Details Size 36"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 8 5 8" height Actual Filter Size 35 3 4"w x 5 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. Our