Residential Grade 3 Door Hardware

The Master Lock No. BC0403BOX features a biscuit style knob with six-way adjustable latch to fit all doors with 2-3/8in or 2-3/4in backset, square, rounded corners, or drive-in. This knob offers ANSI Grade 3 performance for interior non-locking applications. The polished brass finish provides a sleek appearance. The Limited 25 Year Mechanical/Five (5) Year Finish Warranty provides peace of mind from a brand you can trust.