12"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 25.875"H] Color_R-4.2 Yellow actual front end outer dimensions

actual front end outer dimensions are approximately 14 5/8" width X 32 5/8" height

these heavy-duty louvers are ideal for use in attics

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 8" duct openings

Actual Front End Outer Dimensions Are 14" Width X 4" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

+How To Measure A Grille Overall Size:

12"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 25.875"H] Color_R-4.2 Yellow actual front end outer dimensions+ Product Details Size 12"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 25. 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