18" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 20 5/8" X 38 5/8"] sidewall function toggleAccordion(event) { event

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+ Product Details Size - 6"w X 28"h is the size for the duct opening measurement only

this piece is the perfect touch of class you need to add to your decor

actual front end outer dimensions are approximately 28 5/8" width X 18 5/8" height

+ Product Details Size - 12"w X 14"h is the size for the duct opening measurement only

18" X 36" Steel Return Air Filter Grille for 1" Filter - Fixed Hinged - [Outer Dimensions: 20 5/8" X 38 5/8"] sidewall function toggleAccordion(event) { event+ Product Details Size 18"w X 36"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 20 5 8" width X 338 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