The NE4X4WH6 Halogen-Free Wide Slot Wiring Duct design provides greater rigidity and allows for a wide range of wire/bundle sizes. Upper and lower scorelines for easy finger/sidewall section removal. 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. 4.06" x 4.14" (103.1 mm x 105.2 mm) and 6' (1.83 m) long. Cover sold separately. Color White. 6 pieces per package.