22" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 26 5/8"] w8h8 + Product Details Size -

+ Product Details Size - 20"w X 16"h is the size for the duct opening measurement only

+ Product Details Size – 36"w X 12"h is the size for the duct opening measurement only

Its smooth

Actual Front End Outer Dimensions Are 3

actual front end outer dimensions are approximately 32 5/8" width X 12 5/8" height -

22" X 24" Steel Return Air Filter Grille for 1" Filter - Removable Frame - [Outer Dimensions: 24 5/8" X 26 5/8"] w8h8 + Product Details Size -+ Product Details Size 22"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 5 8" width X 26 5 8" height Actual Filter Size 21 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 Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on