Condition: Brand _x000D_ Item Type: Window Opener_x000D_ Material: Aluminium_x000D_ Opening Force: 25kg / 55lb_x000D_ Operation Area: Start at 17-25 (63-78)_x000D_ Maximum Open: Full at 30-32 (86-90)_x000D_ Closing Force: 15kg / 33lb via heavy duty spring_x000D_ Support Bar Length: Approx. 34cm / 13.4in_x000D_ Spring Fixing Tool Size: Approx. 14 x 5 cm / 5.5 x 2 in_x000D_ Weight: Approx. 343g / 12.1oz 1Made of high quality aluminium material, not easy to rust and durable in use. 2Spring and support bar provide additional protection against wind damage. 3The window opener automatically opens and closes as the temperature changes. 4Universal, easy to install and use, suitable for any blind window, easy to use. 5Easy fitting by clamps or screws provided, no batteries or electricity required.1 x Support Bar1 x Spring Fixing Tool4 x Slotted Screw2 x SmallCross Nail4 x TD Screws2 x Small Screw4 x Large Round Fixed Ring2 x Small Round Fixed Ring2 x Round Iron Ring1 x Instruction Manual