12"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 11.875"H] 14in diameter Slots are angled to diversify

Slots are angled to diversify the airflow in 2 way direction

Actual Filter Size – 29 3/4"w x 33 3/4" x 1"

Actual Filter Size – 7 3/4"w x 15 3/4" x 1"

& EN 13180 standards

12"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 13.875"W X 11.875"H] 14in diameter Slots are angled to diversify+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 875" width X 11. 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