1)Flame-retardant dryer vent duct with very good resistance to ... I.D.:2"to 24" Highly flexible flame Retardant dryer vent ductApplication: Clamped high temperature resistant duct, especially ... for high temperature gaseous media like vapors and smoke In dryer, automotive, aerospace, shipbuilding, militaryas bellows and compensator Features ... www.utigo.cn Highly flexible flame retardant dryer vent duct