Kuriyama's Tiger-Duct® Extendo-Duct® EDW™ Extendible/Contractible Self-Supporting Ducting Hose is made of a polypropylene tube with coated steel wire helix reinforcement. The EDW™ Series is chemically resistant to a wide variety of chemical fumes with no off-gassing, making it an ideal choice for clean room and fume exhaust applications. Extendo-Duct® hose's unique, wire reinforced, polypropylene construction allows the hose to maintain its shape and support itself once it's positioned. General applications include air conditioning, spot cooling, and heating systems, clean room and chemical fume exhaust, ducting, ventilation, and fume removal, dust control and OEM equipment applications. The EDW™ Series is not for liquid handling use.