16"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 15.875"H] w12h12 + Product Details Size –

+ Product Details Size – 18"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 17 3/4"w x 21 3/4" x 1"

+ Product Details Size - 20"w X 6"h X 2"d (for duct opening measurement only)

+ Product Details Size - 16"w X 22"h X 2"d (for duct opening measurement only)

Great emphasis has been invested in the design of this product to prevent it from kinking in sharp bends & turns and to hold steady and at full diameter in all applications

16"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 15.875"H] w12h12 + Product Details Size –+ Product Details Size 16"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 15. 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