16" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 12 5/8"] Copper Coil then you'll need a 14-inch

then you'll need a 14-inch round vent

actual front end outer dimensions are approximately 38 5/8" width X 18 5/8" height -

provides a modern look and quiet operation due to its half-inch by half-inch cube design

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 25" OR 25" x 20" duct opening (measured at the opening)

16" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 12 5/8"] Copper Coil then you'll need a 14-inch+ Product Details Size 16"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 12 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