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Our 140Â° AOV ventilators are operated by a 24v DC actuator, and the lid is filled with 50mm of CFC and HCFC free insulation with a minimum U-Value of 0.43W/m2K to BS 4841-5: 2006.
All of our standard 140Â° AOV ventilators are manufactured to meet the requirements of Building Regulations, Approved Document B, BS9999 and EN12101-2 and are supplied CE marked.
Lids are supported by heavy-duty stainless steel axel pins and feature an integral 'wrap over' edge, incorporating double seals. Upstands have a purpose made flashing to accept the roof felt (supplied by others and fitted under manufacturer's instructions) flush to exterior insulation.
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