16" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 22 5/8"] return grille border: none

border: none

& EN 13180 standards

actual front end outer dimensions are approximately 12 5/8" width X 18 5/8" height

+ Product Details Size - 4"w X 36"h is the size for the duct opening measurement only

This thoughtful design ensures optimal air circulation for your HVAC system

16" X 20" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 18 5/8" X 22 5/8"] return grille border: none+ Product Details Size 16"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 18 5 8" width X 22 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