Safety is priceless: The apartment window security is made of high quality metal, more than other plastic or PVC products to withstand the impact, more thick and , not deformed and rusty, indispensable window security guards for families Keep your family and children safe: The window security lock can control the window to partially open or close, effectively reducing the risk of children and pets falling from high . The window safety bars also allows you to keep the window open a small part when you sleep with the air conditioner on, enjoying the air circulation while ensuring safety and keeping intruders out Easy to use: You just need to put the window blocker security directly across the window rail or door rail after adjusting the length of the window jammer security bar to fix the window or door, tool-free installation and removal. For vertical , you need to prepare your own Nylon Buckle or screws in order to secure the to the window frame Measure before purchase: Please measure the window or door rail where the window security bars be placed before you purchase. The window rail must be at least 1 inch wide and 16.5 inches long to accommodate, Weight: 0.70217230447 pounds, Manufacturer: Reeatel