Greenhouse Vent Automatic Opener Greenhouse Accessories Window Opener Auto Vent Kit Sensitive Gardening Tools Automatic Greenhouses Supplies Solar Heat Sensitive Dual Spring Lifts 33lbs (1pc)

Features

• 【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.
• 【Installation Precautions】Bracket Setup: Detach the small bracket component first, securely tighten all bolts and nuts, then reattach the bracket. Cylinder Adjustment: Use hot water to extend the pneumatic cylinder to its maximum length. While extended, connect it to the T-shaped connector by inserting the thin pin into the outermost hole. This ensures the opener stays within the safe range and avoids overextending past the stop pin.