HIGH QUALITY MATERIALS-Made of high quality of aluminum and stainless steel.Durable and no rust.
NO ELECTRIC POWER NEEDED&AUTOMATIC-Solar powered , automatically open or close the greenhouse vents as temperature rises or drops.
DOUBLE SPRING-Double spring type, suitable for windy mountain area, resist wind twist.Stronger Force,lifts up to 15.4 Lbs(7kg).
EASY INSTALLATION-Comes with a fitting accessory pack and a detailed manual for easy installation.
OVERHEATING PROTECTION-This automatic window opener will help you maintaining the best growing temperature and prevent your greenhouse from overheating.
