The Design House 726927 Cambridge Entry knob is finished in satin gold and designed for left or right hand doors. The popular styling of the clean-lined knob is easily incorporated into any architectural styles and will add a touch of elegance to your decor. This knob fits the two most common backsets in the U.S. (backset is the distance from the edge of the door to the center of the bore hole), which are 2-3/4-inch and 2-3/8-inch. The full 1/2-inch throw is plated in nickel and does not budge once in place. With security in mind, this knob accepts a key on the exterior but is operated by a turn-button knob on the interior. Entry levers are often used on front doors and back doors. Use this handle on standard 1-3/8-inch and 1-3/4-inch thick doors. This product has a 1-inch by 2-1/4-inch radius corner face plate and 5-pin security. If you are preparing your door for installation, the cross bore should be 2-1/8-inches (54mm) in diameter and the edge bore should be 1-inch (25mm) in diameter. This product is ANSI Grade-3 certified, which means it is rated for residential security. Designed and manufactured by Design House, the trusted source for quality lighting, hardware, plumbing, kitchen, and bath products for every taste and budget.