36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] 8in diameter Actual Filter Size – 7

Actual Filter Size – 7 3/4"w x 31 3/4" x 1"

this flex duct decreases the pressure loss and provides a more hygienic environment

actual front end outer dimensions are approximately 32 5/8" width X 18 5/8" height

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

+ Product Details Size – 6"w X 14"h is the size for the duct opening measurement only

36" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 20 5/8"] 8in diameter Actual Filter Size – 7+ 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