12" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 14 5/8" X 38 5/8"] 8in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 32 5/8" width X 14 5/8" height -

Think of the diameter as a straight line from one end to the other

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

Actual Filter Size – 19 3/4"w x 19 3/4" x 1"

+ Product Details Size - 8"w X 10"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 actual front end outer dimensions+ 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