10"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 9.875"H] 18" Round Duct Pipe actual front end outer dimensions

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

+ Product Details Size - 10"w X 6"h X 2"d (for duct opening measurement only)

+ How To Measure A Grille

including Ductless Mini-Split

10"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 9.875"H] 18" Round Duct Pipe actual front end outer dimensions+ Product Details Size 10"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 875" width X 9. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was