25" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 26 5/8"] rg1010 By simply measuring the width

By simply measuring the width or the length of the vent

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 14" duct opening (measured at the opening)

Rust-Free Aluminum - Made from strong

75" height

25" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 27 5/8" X 26 5/8"] rg1010 By simply measuring the width+ Product Details Size 25"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27 5 8" width X 26 5 8" height Actual Filter Size 24 3 4"w x 23 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.