30" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Sheet Metal/Adjustable Elbow + Product Details Size –

+ Product Details Size – The size of a galvanized sheet metal stack boot is 12" X 3

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 28" or 28" x 12" duct opening (measured at the opening)

+ Product Details Size – 12" X 24" is the size for the drywall opening measurement only

actual front end outer dimensions are 25" Width X 19" Height

[Outer Dimensions: 18

30" X 10" ALUMINUM RETURN FILTER GRILLE FOR 1" FILTER - EASY AIR FLOW - LINEAR BAR GRILLES Sheet Metal/Adjustable Elbow + Product Details Size –+ Product Details Size 30"w X 10"h is the size for the duct opening measurement only, [Outer Dimensions: 32. 5"w X 12. 5"h] Actual Filter Size 29 3 4"w x 9 3 4" x 1" High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Location Sidewall and ceiling. Design Heavier gauge than needed,