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 & EN 13180 standards

& EN 13180 standards

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

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

These are airflow control components made to connect to supply grilles of the drop ceiling

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 & EN 13180 standards+ 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