Prime-Line U 9902 Swing Bar Lock for Hinged Swing-in Doors - Secondary Security Lock for Door and Home Security, 3-7/8 in. Bar Length, Diecast Zinc Construction, White Finish (Single Pack)

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 white 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: 0.4 pounds, Manufacturer: Prime-Line Products (Home Improvement)