EBTOOLS Automatic Roof Vent Opener Greenhouse Accessories Solar Window Louvre Thread Opener Up to 30lbs Dual Spring Opener
- 【Suitable for Most Greenhouses】 This corkscrew will automatically open and close your greenhouse windows to maintain the optimal growing....
- 【High-Quality Structure】 Reliable, high-quality anodized anodized aluminum automatic window opener..
- 【Working Conditions】 Start opening 20°C-25°C (68-77°F).
- full opening distance 45 cm (18 inches), maximum opening weight: 7kg / 15lb..
- 【Environmental Protection】 Non Electric uses solar energy to open or close the greenhouse vents as the temperature rises or falls, including....
- 【Convenience】 Sensitive opener can be clamped or screwed on the greenhouse frame without drilling holes..