14" X 26" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 16 5/8" X 28 5/8"] 2-Way + Product Details Size -

+ Product Details Size - The listed 4" diameter refers specifically to the size of the duct opening

actual front end outer dimensions are approximately 27 5/8" width X 27 5/8" height

+ Product Details Size – 20"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 24"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 42 5/8" width X 22 5/8" height -

14" X 26" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 16 5/8" X 28 5/8"] 2-Way + Product Details Size -+ Product Details Size 14"w X 26"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 16 5 8" width X 28 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