30" X 12" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 32 5/8" X 14 5/8"] Color_White + Product Details Size -

+ Product Details Size - 18"w X 32"h is the size for the duct opening measurement only

And is classified as Class 1 Fire Proof - B1

Actual Filter Size – 29 3/4"w x 29 3/4" x 1"

Actual Filter Size – 15 3/4"w x 19 3/4" x 1"

30" X 12" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 32 5/8" X 14 5/8"] Color_White + Product Details Size -+ Product Details Size 30"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 14 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