20" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 22 5/8"] Floor Grille Solid Base for Stability –

Solid Base for Stability – Built with a solid base for reliable mounting and stability

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

+ Product Details Size – 8" x 12" or 12" x 8" is the size for the duct opening measurement only

+ Product Details Size - 24"w X 36"h is the size for the duct opening measurement only

fasten the edges to studs with the provided screws

20" X 20" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 22 5/8"] Floor Grille Solid Base for Stability –+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 22 5 8" height Actual Filter Size 19 3 4"w x 19 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.