BIBISTORE Automatic Vent Opener Auto Greenhouse Window Openers Solar Powered Cold Frame Roof Vent Kit Wooden Hothouse Vent Auto Opening Tool Gardening Supplies-Lifts 15.4 Lbs 7kg Double Spring
- 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....