The NNC50X50LG2 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. 1.88" x 1.95" (47.8mm x 49.5mm) and 6.6' (2 m) long. Cover included. Color Light Gray. 5 pieces per package.