26"W X 12"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 27.875"W X 13.875"H] w10h10 + Product Details Size -

+ Product Details Size - 36"w X 16"h is the size for the duct opening measurement only

and then smoothly drop in the grill

Actual Filter Size – 31 3/4"w x 15 3/4" x 1"

The grille comes with all necessary screws for a secure fit

26"W X 12"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 27.875"W X 13.875"H] w10h10 + Product Details Size -+ Product Details Size 26"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 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