36" X 16" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 18 5/8"] w18h18 actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 12 5/8" height -

+ Product Details Size - 24"w X 18"h is the size for the duct opening measurement only

4" X 10" Is The Size For The Duct Opening (floor/vent hole) Measurement Only

+ Product Details Size - 14"w X 25"h is the size for the duct opening measurement only

36" X 16" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 18 5/8"] w18h18 actual front end outer dimensions+ Product Details Size 36"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 18 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