Silicone Air Ducting features a single layer of specially formulated, extremely durable & hard wearing Silicone. Complete with external locking cord & Internal bronze coated steel spiral spring to maintain diameter. Silicone ducting is ideal for the transportation of hot and cold air in many air conditioning, refrigeration and ventilation systems. Available in lengths from 1/4 metre to 4 metres. Made from a hard wearing silicone outer with external locking cord and a glass fabric inner.Bronze coated steel spitral spring to maintain the internal diameter. This item is in the category "Home, Furniture & DIY\Heating, Cooling & Air\Heating & Cooling: Parts & Accessories\Ducting & Duct Hoses". The seller is "ultimatecareparts" and is located in this country: GB. This item can be shipped worldwide.