40" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 42 5/8" X 12 5/8"] Insulated Line actual front end outer dimensions

actual front end outer dimensions are approximately 26 5/8" width X 10 5/8" height

and the second number represents the height

actual front end outer dimensions are approximately 10 5/8" width X 14 5/8" height

+ Product Description Upgrade your HVAC system with our 5" Round Air Vent Supply Grille

40" X 10" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 42 5/8" X 12 5/8"] Insulated Line actual front end outer dimensions+ Product Details Size 40"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 42 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