Defender Security U 9897 Swing Bar Lock for Hinged Swing-In Doors – Secondary Security Lock for Door and Home Security, 3-7/8” Bar Length, Diecast Zinc Construction with a Brass Finish (Single Pack) - Prime-Line

• UPC   049793098979
• SECURITY LOCK – This swing bar lock is a security locking device for hinged swing-in doors, allowing a door to be slightly opened to allow safe viewing and ventilation CHILD-SAFE SECURITY DEVICE – This swing bar door lock can also be installed out of reach of children so they cannot open the door by themselves, providing additional child-safe door security EASY INSTALLATION - Adding a security swing latch to your door is quick and easy. all installation fasteners, including plastic shim spacers for leveling, are included STRONG AND DURABLE – Constructed of zinc diecast with a brass  finish, the security door lock is strong, durable, and sure to last DIMENSIONS - This locking bar is 3-7/8 inch bar length x 2-1/2 inch height and has a long, hinged bar, which folds over the closed door to engage the catch. for further dimensional information, please see the line drawing, Weight: 0.465 Pounds, Manufacturer: Prime-Line Products (Home Improvement)