Greenhouse Window Opener, Automatic Opening Closing Louver for Home Office Greenhouse Cold Frame Blind Window Thermal Self Regulating Strut for Plant

Spec: Condition: 100% Brand New Item Type: Window Opener Material: Aluminium Opening Force: 25kg / 55lb Operation Area: Start at 17-25℃ (63-78℉) Maximum Open: Full at 30-32℃ (86-90℉) Closing Force: 15kg / 33lb via heavy duty spring Support Bar Length: Approx. 34cm / 13.4in Spring Fixing Tool Size: Approx. 14 x 5 cm / 5.5 x 2 in Weight: Approx. 343g / 12.1oz packing list: 1 x Support Bar 1 x Spring Fixing Tool 4 x Slotted Screw 2 x Small Cross Nail 4 x TD Screws 2 x Small Screw 4 x Large Round Fixed Ring 2 x Small Round Fixed Ring 2 x Round Iron Ring 1 x Instruction Manual

• Automatic Temperature Adjustment: This window opener extends or retracts as the temperature changes, starting operation between 17-25℃ (63-78℉) and reaching full open at 30-32℃ (86-90℉).
• Strong Wind Protection: The spring and support bar work together to provide additional against wind damage, keeping the vent stable during gusts.
• Universal Fit and Simple Setup: This unit suits any blind window and allows easy fitting using the included clamps or screws, with no battery or electricity required.
• Robust Aluminium Build: Manufactured from premium aluminium material, this opener resists rust and supports long-term use in greenhouse environments.
• Complete Mounting Kit: The package includes a support bar, spring fixing tool, multiple screw types, fixed rings, and an instruction manual for straightforward assembly.