The Lock-it Block-it XL – (1 Device) Extra Long Home Security Adjustable Window Locks/Window Security Bars, Door Jammer & Sliding Glass Door Security bar, Child Safety Lock & Patio Door Security bar

Key features

• HIGH-IMPACT INDUSTRIAL STRENGTH ABS & PVC DURABLE Plastic burglar-bars used to block criminals from entering through open windows and patio doors. Withstands repeated impacts! Windows can now stay OPEN and be securely Blocked at safe heights while OPEN.
• Extendable & Adjustable! Control how high you want the window to open with the 13 adjustable settings. Lock the height in place with the push of a pin. Used for Single-Hung windows, Sliding Windows and Patio Doors. When the window makes contact with the Lock-it Block-it, it's Stopped.
• Quick & easy installation. No tools needed. Held in window track by supplied adhesive strips. It doesn't fall out when the window is lowered. Removes easily in emergencies. Replaces those ugly wood blocks. Fits discretely in window track and doesn't obstruct view.
• Combined cylinders are as thick as two nickels. The unique double-headed push pin provides extra resistance from forced entry. Burglars can't reach the device from the outside when properly installed and adjusted. Block children from falling out of open windows.
• IMPORTANT - BEFORE BUYING, MEASURE the window or door track where the device will be placed. The regular security bar extends from 17 inches to 30 inches long (MAX length is 2 and 1/2 feet). The Extra-long bar extends from 31 inches to 3 feet 6 inches. Window tracks MUST be at least 1 inch wide. Device is 1 inch by 1 inch wide on all sides.