10" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 12 5/8"] Insulated Line Set + Product Details Size -

+ Product Details Size - 16"w X 18"h is the size for the duct opening measurement only

which the interior PET provides

+ Product Details Size - 14"w X 28"h is the size for the duct opening measurement only

simplifying maintenance

10" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 12 5/8"] Insulated Line Set + Product Details Size -+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 12 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