Greenhouse Autovent Automatic Window and Sliding Door Opener Also Opens Cold Frames Double Arm Spring Premium

Opens greenhouse windows, sliding doors and coldframe lids due to double arms and double springs Maximum window opening: 45cm depending on adjustment and load. Maximum opening temperature: 30°C (86°F) starts opening at 17°C can lift up to 14kg. Standard Vents lift 7kg Easy Clip makes this unit suitable for greenhouses, sliding doors, half doors, side windows and cold frames. Suitable not only for greenhouse windows but also for sliding doors, half doors, side windows, and cold frames, enhancing its adaptability. Premium model with double arms and springs for added protection against wind damage, delivering a stronger opening/closing force. No need for electricity or batteries; the cylinder is heated by the sun, allowing for eco-friendly and cost-effective functionality. 2 year warranty