18" X 14" Steel Return Air Filter Grille for 1" Filter - Fixed Hinge - [Outer Dimensions: 20 5/8" X 16 5/8"] RG66 Black-HP text-align: center

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 25" OR 25" X 16" duct opening (measured at the opening)

+ Product Details Size - 34"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 20"h is the size for the duct opening measurement only

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

18" X 14" Steel Return Air Filter Grille for 1" Filter - Fixed Hinge - [Outer Dimensions: 20 5/8" X 16 5/8"] RG66 Black-HP text-align: center+ Product Details Size 18"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 16 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