Yziixi Solar Heat Sensitive Automatic Greenhouse Vent Opener Auto Vent Kit Gardening Tools for Greenhouses Roof Ventilation Single Spring Vent Opener
- 【HIGH QUALITY】All parts corrosion resistant. Spring controlled - Resists wind damage when opening and closing. When temperature above 25°/77°F,....
- 【NON ELECTRIC】Uses solar energy, open or close the greenhouse vents as temperature rises or drops and clamps to greenhouse bars - no drilling....
- 【APPLICATION】Maximum window opening approximately 45cm/18'', depending on adjustment and load. Window roof vent opener Suitable for greenhouse....
- 【AUTOMATIC】This opener will automatically open and close your greenhouse window, as the temperature changes automatically, maintains the best....
- 【NOTICE】 Do not apply excessive loads by locking or covering window.The automatic ventilation window opener in the greenhouse cannot be used in an....