This solid brass Egg & Dart Interior handleset with deadbolt is for use on any door with a thickness of 1-3/4" to 2-1/4". This handleset is for the inside of the door only, you must purchase the outside handleset separately. The deadbolt is available as either single cylinder, with a keyed cylinder on the outside and a manual thumbturn on the inside; or double cylinder, with a keyed cylinder on both sides. There are 4 knob choices, shown below. Select from either 2-3/8" or 2-3/4" backset, which is the measurement from the edge of the door to the center of the lock. Multiple finishes available, see them below.