Bayliss are UK manufacturers and suppliers to the Gardening industry. Bayliss Engineering are known for their Bayliss Greenhouse Autovent. Available in a range of models, the Bayliss Greenhouse Autovent opens and closes a Greenhouse's hinged vent automatically using energy from the warmth of the sun or the surrounding air. The hotter it gets, the wider it opens the vent. BHL are now proud to Stock the Bayliss Autovent enabling us to supply this innovative product at Low Trade Prices and with Fast Shipping. Shop online now at BHL for Bayliss Engineering products.