Ruining Louver Opener, Universal Easy to Install Automatic Window Opener, for Greenhouse Blind Window Home Garden

Feature:1. Made of high quality aluminium material, not easy to rust and in use.2. Spring and support bar provide additional protection against wind damage.3. The window opener automatically opens and closes as the temperature changes.4. Universal, easy to install and use, suitable for any blind window, easy to use.5. Easy fitting by clamps or screws provided, no batteries or electricity required.Spec:Condition: 100% Brand NewItem Type: Window OpenerMaterial: AluminiumOpening Force: 25kg / 55lbOperation Area: Start at 17-25℃ (63-78℉)Maximum Open: Full at 30-32℃ (86-90℉)Closing Force: 15kg / 33lb via heavy duty springSupport Bar Length: Approx. 34cm / 13.4inSpring Fixing Tool Size: Approx. 14 x 5 cm / 5.5 x 2 inWeight: Approx. 343g / 12.1oz Package List:1 x Support Bar1 x Spring Fixing Tool4 x Slotted Screw2 x Small Cross Nail4 x Screws2 x Small Screw4 x Large Round Fixed Ring2 x Small Round Fixed Ring2 x Round Iron Ring1 x Instruction Manual

• Easy fitting by clamps or screws provided, no batteries or electricity required.
• Universal, easy to install and use, suitable for any blind window, easy to use.
• Made of high quality aluminium material, not easy to rust and in use.
• Spring and support bar provide additional protection against wind damage.
• The window opener automatically opens and closes as the temperature changes.