The "PE Flex Vaculoop" is a lightweight, flexible drain hose constructed using a lightweight polyethylene copolymer wall which is reinforced with an spring helix, making it a crush-resistant product suitable for areas where flexibility and tight-bending characteristics are a must. It retains a wide operating temperature range of -40°F to +140°F, allowing it to provide reliable air transfer for temperatures below- or above-ambient. One of the key features of this duct is its smooth interior wall. This smooth interior structure will prevent small materials and debris from getting caught and accumulating inside the duct. The "PE Flex Vaculoop" lightweight flexible drain hose is available in four internal diameter sizes, including 1 in., 1.25 in., and 1.5 in. These relatively small diameters provide you with a vacuum hose that is great for a variety of application such as conduit wiring, lightweight vacuum applications and drain hosing. This hose meets IAMPO compliance and is listed by TEI-LS for use in RV plumbing systems. This flexible drain hose is available in a standard 50-foot length. Color: Gray.