The Lock-it Block-it Regular – (2 Devices) Home Security Adjustable Window Security Bars/Window Lock Bar Security Bar for Sliding Glass Door Child Safety Lock & Sliding Patio Door Security Bar

The Lock-it Block-it is an adjustable security bar designed for windows and patio doors providing burglar-proof and childproof protection. This versatile device allows windows to remain open at a safe height while ensuring they stay securely blocked. It also doubles as a secondary locking mechanism. With this device you can help prevent children from falling out of open windows and block intruders from climbing in. Security experts recommend physical barriers like window security bars to safeguard your home. Suitable for use with single-hung windows sliding windows and patio doors it is a highly versatile security solution. When properly installed and adjusted it cannot be reached from the outside providing strong interior protection. The standard bar adjusts from 17 inches to 2 feet 6 inches. The King-Size (KS) adjusts from 21 inches to 3 feet 3 inches for larger windows. The Extra-Long (XL) version extends from 31 inches to 3 feet 7.5 inches making it a great option for slidin