20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] w8h8 European: EN 10270-1-SM

European: EN 10270-1-SM

actual front end outer dimensions are approximately 24 5/8" width X 24 5/8" height

+ Product Details Size - 24"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 33

+ Product Description Upgrade your HVAC system with our 4" Round Air Vent Supply Grille

20" X 25" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 22 5/8" X 27 5/8"] w8h8 European: EN 10270-1-SM+ Product Details Size 22"w X 25"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 24 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