Thick wall adhesive lined, 3" (76.2mm) diameter, 48.0" (1219.2mm) length, adhesive lined black cross-linked polyolefin, 2 pc. package quantity.Approved by UL for outdoor, direct sunlight applications as well as submersible and direct burial installations, providing excellent cable protection with an operating temperature up to 230°F (110°C) with VW-1 flame rating. Ideal for outdoor alternative energy applications, such as, wind and solar. A broad soft flame torch or hot air gun can be used to shrink the tube. Minimum recommended shrink temperature is 248°F (120°C). Continually move the heat source around the diameter of the tube, which will cause the product to recover. The Panduit heat gun is designed for indoor use only, and the recovery rate will be slower than using a torch. Do not scorch the tube.