20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] Aluminum And is classified as Class

And is classified as Class 1 Fire Proof - B1

this floor register seamlessly combines durability and design

actual front end outer dimensions are approximately 16 5/8" width X 10 5/8" height

+ Product Details Size – 18"w X 20"h is the size for the duct opening measurement only

20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] Aluminum And is classified as Class+ Product Details Size 22"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 5 8" width X 27 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