36" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 38 5/8"] Round Duct Pipe + Product Details Size -

+ Product Details Size - 10"w X 30"h is the size for the duct opening measurement only

Lightweight and Durable Weighing just 3

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 30" OR 30" X 16" duct opening (measured at the opening)

+ Product Details Size - 34"w X 4"h is the size for the duct opening measurement only

36" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 38 5/8" X 38 5/8"] Round Duct Pipe + Product Details Size -+ Product Details Size 36"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 38 5 8" width X 38 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 Fixewd hinged for easy filter change & cleaning uses a 1" thick filter. Our filter grille latch is easy to use on your fingers and