Manufactured from the same PVC material as standard Pro-Duct colors, HellermannTyton also offers an intrinsic blue color option. The intrinsic blue color indicates that the wiring contained in the duct runs to intrinsically safe components in the control panel. HellermannTyton Pro-Duct High-Density, Slotted-Wall Wiring Duct features narrow fingers equaling a 2 to 1 finger ratio compared to standard slotted wiring duct. With the narrow fingers, compact designs and components are more easily accommodated.