Thermal Drive for Greenhouses

Technical data: 1. Maximum window opening is approximately 45 cm/18 inches. 2. Maximum opening temperature 30-38C, depending on regulations and load. 3. Roof ventilation opener is suitable for greenhouse windows weighing up to 7 kg (If over 7kg, we recommend using two bottle openers) 4. Start opening at about 20-25℃. When the temperature is above 25℃, The window actuator will remain open. When the temperature drops to 15-18℃, The window closer will close completely. Features: 1. Fully automatic greenhouse ventilation, controllable Thermostatic ventilation is provided through greenhouse roof windows. 2. Top vent opener is easy to install - screw in wood and attached to the aluminum greenhouse, no drilling required. (full Installation instructions provided) 3. The top window opener is easy to adjust – just one simple adjustment. 4. Solar – no batteries or electricity required 5. It has automatic window opening function to ensure constant Day and night temperatures in the greenhouse. 6. Anodized aluminum structure, all parts are corrosion-resistant, Even if the surface is scratched, the window opener will not rust. 7. Spring control - prevents wind when opening and closing. notes: 1. Roof vent opener does not fit Suitable for temperatures above 50°C/122°F. 2. Make sure your greenhouse windows can be opened and are not blocked, otherwise This may cause damage.