20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w16h16 please note that the total

please note that the total outer dimensions of the grille measure 10" in diameter

+ Product Details Size - 30"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

+ Product Details Size - 16"w X 8"h is the size for the duct opening measurement only

Quality Packaging - Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

20" X 40" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 42 5/8"] w16h16 please note that the total+ Product Details Size 20"w X 40"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 22 5 8" width X 42 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