CMYUN Sliding Door Lock Guard/Window Security Bars, Extra Wide Burglar Foldable Window Grille Rail, Basement Window Protection Guardrail, Theft Fences(W100xH90cm/40x36in)

【 Foldable & Extendable Design --- Sliding window guards come with a folding design. When not in use it can be folded to one side to save space and can be used as an emergency escape egress. When fully closed it does not affect the entry of fresh air and light at all, allowing you to sleep with peace of mind 【 Locked Anti-theft ＆ Child Safety 】 --- With internal and external locks, and 3 keys. Spacing between the bars is only 11cm (4 3/8"), effective in preventing intruders and burglars from breaking into your home, also prevents children or pets from accidentally opening and falling 【 Metal Aluminum Window Safety Guard 】 --- Window security bars are made of metal aluminum, light weight, strong impact resistance, smooth surface, waterproof ＆ rustproof, not easy to deform, can be used outdoors for many years 【 Easy to Install 】 --- Drilled Installation, including all the screws and hardware needed for installation, you can quickly install the window bar guard in a short time. Its elegant appearance blends well with your windows 【 Wide Application 】 --- Window bars are suitable for use in home, children's rooms, basements, garages, sheds, schools, offices, temporary buildings, stores, farm, warehouses, etc. It can also be used as sliding doors and sliding windows