Heavy Duty Retractable Window Grilles with Security Lock, Anti-Tripping Silent Folding Safety Gate, Tall Burglar Bars for Window/Door(W55xH210cm/22x83in)

【Retractable & Grid Design】:Safety grille features a smooth retractable top pulley design for quiet and easy sliding. It folds laterally to save space when not in use. And the hollow grille ensures good air circulation and clear visibility 【Anti-Theft & Safety】:Anti-theft fence comes with standard lock and key to prevent burglary. And prevents children or pets from opening window grilles freely, which protects home safety and avoiding drop hazards 【Aluminum Alloy Material】:Window safety grille made of aluminum alloy. They are lightweight, robust and have strong bearing capacity. Even when exposed to wind, rain and sunlight for a long time, they are not easy to rust or deform, and are durable 【Easy to Install】: Just install the window safety grille first, and then attach it to the installation position. All the necessary screws and hardware are included, so you can complete the installation quickly and easily without complex tools 【Widely Used & Customizable】: Suitable for apartments, schools, shops, hotels and other places. Our window protectors support custom sizes to fit arch windows, sliding windows, fixed windows and bay windows, as well as different sizes doors