Greenhouse Vent Automatic Opener Greenhouse Accessories Window Opener Auto Vent Kit Sensitive Gardening Tools Automatic Greenhouses Supplies Solar Heat Sensitive Dual Spring Lifts 33lbs (2pc)

About this item Temperature-Activated Operation No electricity or batteries required! The greenhouse vent automatic opener automatically opens windows when temperatures rise above 77°F/25°C and fully closes them when temperatures drop below 59°F/15°C. Compatible with most greenhouse windows. Note Place the cylinder in a chilled environment for approximately 10 minutes. Then take out it, manually extend and retract the cylinder, and reinstall it properly for use. Sturdy Aluminum & Stainless Steel Build The greenhouse accessories crafted with rust-resistant aluminum and stainless steel for long-lasting performance in humid conditions. The powder-coated aluminum cylinder ensures weatherproof durability. Supports up to 33 lbs (15 kg) and opens windows up to 18 inches (45 cm). Reinforced Dual-Spring System The window opener features heavy-duty dual springs (not single springs!) for enhanced stability and flexibility, even in strong winds. Quick-close function: During storms, squeeze the longest bracket parts and remove the 8-hole connector to close windows instantly. Easy Installation The automatic window opener includes rust-resistant screws and mounting clamps. Attach it directly to panels, metal frames, or wooden frames with just a screwdriver—simple and convenient! Comes with an illustrated manual. Save Time, Protect Plants Never worry about overheating or frost damage! Automates window control 24/7, freeing up hours for plant care.