16"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 25.875"H] 3-Way or 4-Way The total outer size of

The total outer size of this grille is the listed size plus plus 2 and 5/8"

Can be hooked up with our "Butterfly Dampers" for precise airflow control

+ Product Details Size – 20"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 35 3/4"w x 33 3/4" x 1"

16"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 17.875"W X 25.875"H] 3-Way or 4-Way The total outer size of+ Product Details Size 16"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 875" width X 25. 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