36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w18h18 please note that the total

please note that the total outer dimensions of the grille measure 8" in diameter

1-1/8” - 2334 PSI

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

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actual front end outer dimensions are approximately 12 5/8" width X 26 5/8" height

36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] w18h18 please note that the total+ Product Details Size 36"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 20 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