The Master Lock No. BC 0405 BOX 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 antique brass finish provides a sleek appearance. Limited Lifetime Warranty.