Metal ducting that extends from 0.8 to 3 meters long Aluminum ducting with a temperature range of –22 °F to +284 °F Offered in many I.D. sizes: 3", 4", 5", 6", 8", 10", and 12" Aluminum hose that resists metal fatigue, weathering, and most corrosive fumes and chemicals Semi-rigid construction means that, once bent, the duct stays in place without extra support