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