40"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 41.875"W X 17.875"H] return grille + Product Details Size -

+ Product Details Size - 32"w X 10"h X 2"d (for duct opening measurement only)

875" width X 6" height

Reliable Safety Features – Equipped with an automatic safety switch that can be wired to an alarm system to warn of possible tank overflow

+ Product Details Size – 10" x 18" or 18" x 10" is the size for the duct opening measurement only

40"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 41.875"W X 17.875"H] return grille + Product Details Size -+ Product Details Size 40"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 41. 875" width X 17. 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