The Bayliss Mk 7 Greenhouse Autovent Is Approx. 29cm Long & Will Lift A Vent Weighing Up To 6kg. It Can Be Set To Start Opening At Any Temperature Between 12-25c, Giving A Maximum Opening Of Approx. 30cm.our Supplier Gives A 2 Year guarantee On All Replacement Cylinders Although They Should Last 6-10 Yearsimportant To Ensure That Each Cylinder Is Fitted Exactly Parallel To The Window To Avoid Excess Pressure On Sealwill Fit All Greenhouses Except Robinsons Branddrill Holes Are 6cm
- 7cm Apartreplacement Cyclinders Also Availableplease Note: Autovents Do Not Fit Our Harrod Superior Greenhousesavailable In Natural Aluminium Finish