Bayliss Greenhouse Autovent XL Reliable, quality built anodised aluminium automatic window opener for greenhouses. Clamps onto most aluminium greenhouse vents no need for drilling. Can also be used for timber framed vents. Will fit a window weighing 12.5kgs (28lbs) , exerting a load of 6.5kgs (14lbs) It is temperature adjustable and can be set to start opening the window from 13 18C (55 -65 F)

Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.