8" X 8" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 10 5/8" X 10 5/8"] Return Grille + Product Details Size -

+ Product Details Size - 22"w X 36"h is the size for the duct opening measurement only

positioning supply and return grills accordingly

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height -

if your hole is 20" wide by 14" tall

+ Product Details Size - 28"w X 8"h is the size for the duct opening measurement only

8" X 8" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 10 5/8" X 10 5/8"] Return Grille + Product Details Size -+ Product Details Size 8"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 10 5 8" width X 10 5 8" height. High Quality high quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Ceiling Design Fixed hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and