Diameter: 15 cmstatic, acid and alkali, waste gas.Flame retardant, wear-resistant and tensile.This diameter exhaust hose can fits to various air conditioner models as long as you are using same diameter hose.Can be retractable, universal change.Package Included:1 x Air Conditioner Exhaust HoseThe aluminum foil is self-contained, it will not shrink after installation, and it can maintain the flatness of the tube.Specification:Outer Material: PVC Inner Material: Aluminum Foillength:2MFeatures:Heavy duty for long reliable life.It can be used in workshop, automobile exhaust, bathroom, electronic factory, sewer, shipyard, refrigeration and environmental protection.Color: WhiteThis flexible duct is ideal for general purpose exhaust applications including bathroom fans and surface mounted humidifier units.It can be used for smoke, , , high temperature gas, powder draining, ventilation and ventilation.