Suitable for all greenhouses, including fastening material. The opening angle is easy to adjust. Temperature-controlled device. Do not use this opener cylinder in areas where the temperature exceeds 50 degrees Celsius (122°F). Easy and hassle-free installation. Can be installed easily and without issues in standard greenhouses. Solar-powered window opener. As temperature rises or falls, the greenhouse window opens or closes automatically. Automatic window opener for roof vents, suitable for wood or aluminum greenhouses. No electricity required. The piston inside the cylinder moves in response to temperature changes, automatically opening or closing the window. Adjustable opening angle. Technical data: Lifting capacity: max. 14 kg Lifting height: max. 45 cm Temperature range: 16°C to 35°C Dimensions: (L x W x H) 37.50 cm x 9.5 cm x 5.5 cm Weight: 650 g Color: silver Material: stainless steel Package contents: 1 x Window Opener Only the above package content is included; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed: +/- 1-3 cm.