Americ Disp Ventilation Duct,12in x 500ft,Poly AM-DDISP500 Americ AM-DDISP500
Disposable Ventilation Duct, Conductive Material Construction No, Color Clear, Diameter 20 in, Material PVC Coated Polyester, Standards UL-94-VO, For Use With Blowers, Length 500 ft.