With the highest percentage of open area found on any of our vent panels (64%), all VT series products are made from 16-gauge perforated steel, and are flanged for extra strength. Black powder coat finish. Also known as -Middle Atlantic - U.S. 2SPC VENT PNL, POWDER FINISH - NO-VT2-VT Series Vent Panel, Large Perforated Design - Panel Height: 3 1/2 H (2U Space)