Automatic Opening Closing Louver Blind Window Opener Opening Tool for Home Office Greenhouses , Roof Ventilation Window Opener , Roof Ventilation Window Opener , Automatic Opening Cwindow opener tool

Automatic Opening Closing Louver Blind Window Opener Opening Tool for Home Office Greenhouses , Roof Ventilation Window Opener , Roof Ventilation Window Opener , Automatic Opening Cwindow opener tool

• [Automatic] : This opener will automatically open and close your greenhouse window , as the temperature changes automatically , maintains the best growing temperature and prevents your greenhouse from overheating . Automatic shutter shutter shutter opener
• [Applicable Scene] : The maximum opening of the window is 45cm , simple installation , no complicated operations , can be clamped onto or screwed onto your greenhouse frame .
• [Overheating Protection] : This automatic window opener will help you maintaining the best growing temperature and avoid your greenhouse from overheating .
• [Easy To Install] : Vent opener greenhouse equipped with screws , screw it into the panel , wood or metal frame directly with a screwdriver , simple and convenient .
• [Notice] : Do not apply excessive loads by locking or covering window . The automatic ventilation window opener in the greenhouse cannot be used in an environment with a temperature higher than 50¡ã