8" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Height_30in + Product Details Size &

+ Product Details Size & Compatibilty - The 12" to 7" round metal pipe reducer & increaser 30 gauge is compatible with duct 12" to 7"

Unlike traditional doors that have visible frames and hinges

With plain ends

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 12" duct openings

The operable dampers

8" x 25" Steel Return Air Filter Grill for 1" Filter Removable Face/Door Height_30in + Product Details Size &+ Product Details Size 8"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 10 5 8" width X 27 5 8" height Actual Filter Size 7 3 4"w x 24 3 4" x 1" High Quality High quality solid stamped steel with counter sunk screw holes (screws included) and no sharp edges Installation Location Sidewall and ceiling Design Removable door face for easy filter change & cleaning uses a 1" thick filter. Our