34" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 18 5/8"] Aluminum Rust-Free Aluminum - Made from

Rust-Free Aluminum - Made from strong

rotate it to align with the square frame

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 10" duct opening (measured at the opening)

+ Product Details Size - 20"w X 14"h is the size for the duct opening measurement only

strong aluminum construction with smooth finished edges for easy and safe use

34" X 16" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 36 5/8" X 18 5/8"] Aluminum Rust-Free Aluminum - Made from+ Product Details Size 34"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 36 5 8" width X 18 5 8" height Actual Filter Size 33 3 4"w x 15 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.