10" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 27 5/8"] Compatible With Duct 10in For 12" duct opening

For 12" duct opening

actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

and then smoothly drop in the grill

Actual Filter Size – 31 3/4"w x 13 3/4" x 1"

+ Product Details Size – 15" Wooden Corner Baseboard Grille

10" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 12 5/8" X 27 5/8"] Compatible With Duct 10in For 12" duct opening+ Product Details Size 10"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 12 5 8" width X 27 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