Suitable for all greenhouses, including fixing materials. The opening angle is easy to adjust. Temperature control device, do not use this opening cylinder anywhere the temperature exceeds 50 degrees (122F). Easy and hassle-free installation. The window opener can be easily installed without any problems in a standard greenhouse. Window openers use solar power. When the temperature rises or falls, the openings in the greenhouse open or close. Automatic window opener roof ventilation, suitable for wooden or aluminum greenhouse, no need to power on, the cylinder piston moves and automatically opens or closes the windows according to the temperature. The opening angle is easy to adjust. Technical data Lifting capacity: max. 14 kg lifting height: max. 45cm Temperature range: 16°C to 35°C Dimensions: (L x W x H) 37.50cm x 9.5cm x 5.5cm Weight: 650g Colour: silver Material: Stainless steel Note: The data is manual measurement, please allow 1-130cm error, due to differences between light and screen, there will be a certain difference in color, the specific received in kind shall prevail.