12" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 14 5/8" X 38 5/8"] 8in diameter Example: If your hole is

Example: If your hole is 20" wide by 14" tall

actual front end outer dimensions are approximately 22 5/8" width X 38 5/8" height -

Filter Size - 20

You may think of grilles and registers as a generic component of the ventilation system in your house

+ Product Details Size - 20"w X 24"h is the size for the duct opening measurement only

12" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 14 5/8" X 38 5/8"] 8in diameter Example: If your hole is+ Product Details Size 12"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 14 5 8" width X 38 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