Product DescriptionThe Master Lock TUO0403 features a tulip style door knob with six-way adjustable latch to fit all doors with 2-3/8 in. (60 mm) or 2-3/4 in. (70 mm) backset, square, rounded corners, or drive-in. This door knob offers ANSI Grade 3 performance for interior non-locking applications. The polished brass finish provides a sleek appearance. The Ten Year Limited Warranty provides peace of mind from a brand you know and can trust.From the ManufacturerThe SilvaBond protected finish on this Tulip Knob Hall & Closet Lockset has proved to be very effective in controlling on surfaces. Independent laboratory testing has confirmed the effectiveness of this long lasting and durable finish.