25" X 16" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 27 5/8" X 18 5/8"] rg1010 Insulation – A thick blanket

Insulation – A thick blanket of fiberglass insulation provides you with an R-Value of 8

+ Product Details Size - 30"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 10"w X 4"h is the size for the duct opening measurement only

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

25" X 16" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 27 5/8" X 18 5/8"] rg1010 Insulation – A thick blanket+ Product Details Size 25"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27 5 8" width X 18 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