Allegro® Statically Conductive Ducting is lightweight, retractable and designed for maximum air handling capabilities. Dual direction flow with low friction loss while providing a safe positive means of discharging static build-up. It's constructed of single-ply vinyl and polyester with a neoprene coating over a Class 1 hard drawn spring steel wire helix. The retractable, non-collapsible design is heat resistant up to 180°F.