24" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 20 5/8"] Compatible With Duct 10in + Product Description Upgrade your

+ Product Description Upgrade your HVAC system with our 5" Round Air Vent Supply Grille

actual front end outer dimensions are approximately 32 5/8" width X 32 5/8" height -

By simply measuring the width or the length of the vent

+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

24" X 18" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 26 5/8" X 20 5/8"] Compatible With Duct 10in + Product Description Upgrade your+ Product Details Size 24"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 26 5 8" width X 20 5 8" height Actual Filter Size 23 3 4"w x 17 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.