The NNC37X37WH2 Halogen-Free Wide Slot Wiring Duct Is Used to Route, Protect, and Manage Wires Near Sensitive Electronic Equipment and In Environments Where Heat Resistance or Public Safety Is A Concern. Ul 94 Flame Class Of V-0 With A Ul Recognized Continuous-Use Temperature Up to 95°C (203°F). Halogen-Free, Polyphenylene Oxide (Ppo). Mounting Holes Provided. 1.41" X 1.46" (35.8 MM X 37.1 MM) and 6.6' (2 M) Long. Cover Included. Color White. 5 Pieces Per Package.