20" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 26 5/8"] w25h25 Installing the plaster frame is

Installing the plaster frame is effortless – secure it into your sheetrock

Whether you're restoring an old Victorian or craftsman style home

simplifying maintenance

this easy-to-install grille fits seamlessly into any standard return filter opening

+ Product Details Size - 14"w X 4"h is the size for the duct opening measurement only

20" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - * Filter Included * [Outer Dimensions: 22 5/8" X 26 5/8"] w25h25 Installing the plaster frame is+ Product Details Size 20"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 26 5 8" height Actual Filter Size 19 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.