The Flexaust FSP-1 PVC polyester duct hose, used for industrial ventilation and fume extraction applications, is a black, single-ply, PVC vinyl-coated polyester fabric hose, reinforced with a spring steel wire helix and an external orange PVC wearstrip. It resists chemicals, external abrasion, and drag, and is flexible and compressible for easy manipulation and installation. A temperature range of -20 to 180 degrees F makes it suitable for applications such as landfill venting and chemical fume extraction. This polyester duct hose is made from flame-retardant materials per the UL 94V-0 Flammability standard, and it is available with other wearstrip colors and additional coatings for greater abrasion and chemical resistance.

Duct hoses are flexible or rigid tubes that convey gases, liquids, and lightweight bulk materials from one location to another. They are made from an array of materials that range from polyurethane and thermoplastic rubber, to PVC and aluminum-coated fiberglass fabric, and are typically reinforced with a steel wire or rigid plastic helix, also known as a €œspiral.€ Duct hoses are secured with hose clamps or U-bolts, and two pieces of hose are joined with a hose connector. Common applications for duct hoses include heating and cooling, ventilation, fume and smoke exhaust, vacuum cleaning, moving chips and shavings, handling bulk packing materials, and water and waste discharge.

Flexaust manufactures flexible hose, metal ducting, and accessories for industrial and commercial applications. The company, founded in 1938 and headquartered in San Diego, CA, is part of the international Schauenburg Group.