The RENSON ALUDEC is a flexible, strong laminated hose. The hose comprises multiple layers aluminium and polyester with a coiled wire. The hose can be attached to round and oval connectors. The Aludec consists of a "sandwich construction”. This means that the different layers of polyester and aluminium completely overlaps one another. This way the construction becomes very solid and the ventilation system can function for longer in case of a fire.