16" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 12 5/8"] Return + Product Details Size -

+ Product Details Size - 30"w X 28"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 12 5/8" height

With a 5" diameter for the duct opening measurement

+ Product Details Size - 16"w X 30"h is the size for the duct opening measurement only

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

16" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 12 5/8"] Return + Product Details Size -+ Product Details Size 16"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 12 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