HI-TECH DURAVENT's flame-retardant hoses are UL-recognized for safety-critical air handling applications, such as ventilation, filtering, and fume evacuation. The 2PN polyester hose is coated with neoprene and reinforced with a wire helix. It provides superior durability for positive-or negative-pressure movement of light particles or materials, as well as for blower, exhaust, or smoke-removal systems. The TD-S/TDHS line are one-or two-ply vinyl laminated polyester hoses with an enclosed helix of spring steel for flexibility which features a heavy-duty wearstrip that is abrasion-resistant.
www.hitechduravent.com