Automatic Opening Closing Louver Blind Window Opener Opening Tool for Home Office

Feature: 1. Made of high quality aluminium material, not easy to rust and durable 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. Specification: Condition: 100percent Brand New Item Type: Window Opener Material: Aluminium Opening Force: 25kg / 55lb Operation Area: Start at 17-25 celsius (63-78 Fahrenheit ) Maximum Open: Full at 30-32 celsius (86-90 Fahrenheit ) 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. Package List: 1 x Support Bar1 x Spring Fixing Tool4 x Slotted Screw2 x Small Cross Nail4 x TD Screws2 x Small Screw4 x Large Round Fixed Ring2 x Small Round Fixed Ring2 x Round Iron Ring1 x Instruction Manual