Bradford SupaVent is an economical natural wind driven ventilator designed to exhaust heat & damp from the roof space of a home without the use of electrical energy. The SupaVent has been designed to perform in light breezes, which means the heat in your roof space will be exhausted even on relatively still hot summer days. Unlike traditional metal roof vents, SupaVents are constructed from a durable UV stabilised polymer with stainless steel ball bearings, which means they are suitable for coastal areas as they won’t rust or corrode.