Stone Harbor Hardware 50115-15 Extended Lip Strike Plate with 1.5" Lip, Satin Nickel The size of the lip strike is the distance from the center of the mounting holes to the edge of the lip (see diagram below). The overall width is slightly larger. (e.g. a 3-inch strike plate has an overall width of about 3.5 inches). Mounting screws included. Easy to install, only a screwdriver is needed.