Suitable for all greenhouses, including fastening material. The opening angle is easy to adjust. Temperature-controlled device. Do not use this opener cylinder in environments where the temperature exceeds 50 degrees Celsius (122°F). Easy and hassle-free installation. The opener can be installed easily and without issues in standard greenhouses. Solar-powered window opener. As the 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. The opening angle is adjustable. 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) 37.5 cm x 9.5 cm x 5.5 cm Weight: 650 g Color: silver Material: stainless steel Package Contents: 1 x Window Opener Note: Light shooting and different displays may cause slight color variations between the item and the image. Measurement error allowance is +/- 1-3 cm.