The Design House 779256 Tulip Passage Door Knob is perfect for bedroom, closet, and hallway doors that require latching but not locking. With a tulip knob shape and a matte black finish, this door knob features versatility in style and design. The 2-way latch door handle reverses for left or right-hand doors and adjusts to fit the two most common backsets in the U.S. (2-3/4 inches and 2-3/8 inches). The durable 1/2-inch latch bolt is plated in nickel and does not budge once in place. Use this doorknob on standard 1-3/8-inch to 1-3/4-inch thick doors. This passage knob comes with a 1-inch by 2-1/4-inch radius corner faceplate and mounting hardware so you can confidently install where needed. If you are preparing your door for installation, the cross bore should be 2-1/8 inches in diameter, and the edge bore should be 1 inch in diameter. This latching door knob is ANSI Grade-3 certified and 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.