Aluminumflexible duct Model No.: JF-029 Brief introduction: Named after aluminum alloy soft hose/pipe/duct/tube,aluminum extension tube, Mainspecification: 1-Outer diameter(mm): 50, 60,80,90,100,110,120,125,150,160,175,180,200,250,till 400 2- Thickness: 8um, 10um, 11um, 13um and more 3- Standard length: 4m (as request) 4- Temperature: -30oC 200oC Advantages; 1) Easy to use, economic and financial. 2) Compared to aluminum foil duct,it ismore convenient to transport and can bear higher pressure and temperature, longer lifespan. 3) Many models: ranged from 50mm to 400mm so far. Disadvantages: 1) Big volume, high cost for shipping. 2) Paper carton, no too much pressure. Application: Ideal to use for air condition/ventilation system including water heater, fanner, ventilator, center aircondition in hospital,hotel,restaurant,commercial building as well as industrial and residential applicatioN