Automatic Cylinder - Ideal for your greenhouse, opens and closes your window automatically as the temperature changes.
Premium Quality - Made of high quality aluminium alloy and stainless steel material, no worry corrosion.
Solar Energy - Using vegetable wax as a greenhouse window heater thermostat, no need for electrical power supply.
Easy to Install - Lesgos auto vent opener can be clipped to the greenhouse frame or screwed onto the greenhouse frame.
Greenhouse Helper - Prevent greenhouse overheating. Ideal for your greenhouse window opens and closes.