30" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 32 5/8" X 20 5/8"] w20h20 + Product Details Size -

+ Product Details Size - The listed 5" diameter refers specifically to the size of the duct opening

+ Product Details Size – 14"w X 4"h is the size for the duct opening measurement only

Exceptional Craftsmanship: Hand-inspected for quality

+ Product Details Size - 18"w X 34"h is the size for the duct opening measurement only

9% Pure Copper meeting ASTM B280 standards

30" X 18" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 32 5/8" X 20 5/8"] w20h20 + Product Details Size -+ Product Details Size 30"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32 5 8" width X 20 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