Important Notice: 1. The automatic ventilation system for greenhouses is not suitable for use at temperatures above 50°C (122°F). 2. Ensure your greenhouse window operates smoothly before installation. Specifications: - Maximum window opening height: approximately 45 cm - Temperature for full opening: around 30°C (varies based on adjustment and load) - Maximum supported weight: 7 kg (15 lbs) - Adjustable opening temperature range: 16°C to 25°C Note: When receiving this item during summer, place the black rod in a refrigerator for at least 5 minutes to allow the cylinder to fully retract before assembling the product. Color: Black & Silver Material: Aluminum alloy Package Contents: 1 x Automatic Window Opener Kit Note: The package includes only the items listed above. Other products are not included. Due to light reflection and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement error allowance: +/- 1–3 cm.