16"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 17.875"H] w6h6 + Product Details Size -

+ Product Details Size - 20"w X 36"h is the size for the duct opening measurement only

To Maximize Ventilation Results

Actual Filter Size – 11 3/4"w x 33 3/4" x 1"

Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment

+ Product Details Size - 34"w X 28"h X 2"d (for duct opening measurement only)

16"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 17.875"H] w6h6 + Product Details Size -+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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