Mortise Lockset Heavy Duty Knob

Solid brass trim and cylinder; 5 pin tumbler cylinder; full 1" throw deadbolt; latchbolt cannot retract unless unlocked. Double cylinder with rosettes; 2-1/2" backset, spacing 3-1/4"; outside knob is locked by a button on the face plate; reversible for left or right hand installation; replacement knob furnished with spindle and screws. Commonly used on security storm doors.