16"W X 12"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 13.875"H] Compatible with Duct 8" finished in polished brass

finished in polished brass

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 22" OR 22" x 36" duct opening (measured at the opening)

The powder-coat finish lends a smooth

Whilst the maximum pressure for R410 is 700 PSI

16"W X 12"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 13.875"H] Compatible with Duct 8" finished in polished brass+ Product Details Size 16"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 13. 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