Automatic Window Vent Opener 2Pcs Set

2x Automatic Window Opener for Greenhouse Optimal ventilation through temperature-controlled opening and closing. The automatic window opener can easily and quickly be installed. Suitable for all common greenhouses and garden sheds. The piston of the cylinder opens and closes the window depending on the temperature. You can continuously adjust the opening angle by turning the cylinder and so get the right ventilation for your greenhouse. You get the automatic window opener 2x mounting material included suitable for wooden and aluminium greenhouses. Product Advantages : suitable for windows of common greenhouses and garden sheds made of wood and aluminium ultralight design - easy to transport automatic opening and closing of the window by temperature perfect ventilation of your garden & greenhouse opening height 45cm Opening angle