Suitable for all greenhouses, including fastening material. The opening angle is easy to adjust. Temperature-controlled device. Do not use this opener cylinder in locations where the temperature exceeds 50 degrees Celsius (122F). Easy and hassle-free to install. The opener can be installed easily and without any problems in standard greenhouses. Window opener uses solar power. When the temperature rises or falls, the greenhouse window opens or closes accordingly. Automatic window opener for roof vents, suitable for wood or aluminum greenhouses. No electricity required. The piston of the cylinder moves based on temperature changes, automatically opening or closing the window. The opening angle is easy to adjust. Technical data: Lifting capacity: max. 14 kg Lifting height: max. 45 cm Temperature range: 16C to 35C 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 Note: Light shooting and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowance is +/- 1-3 cm.