5-W-LHR, Antique Brass, Left Hand, Ornamental Knob Rose Mortise Entry Lockset Iron Gate Door Double Cylinder Lock Set. 2-1/2" Backset, Deadbolt: 1", Front Face Plate: 1" x 7-1/8". Commercial Mortise Locksets, For Steel gates. Fits 1-3/8" - 1-3/4" interior and exterior doors. Ideal for security storm doors. Reversible design fits right hand and left hand doors. Flat ball doorknob with bolted mounted knob rose trim. The lockset features a Antique Brass finish for durability. Operates with 2 mortise cylinders to throw the deadbolt or open the lock. 1" deadbolt offers excellent security. Hardware included for easy installation. Add security to your entry door with the Marks USA Antique Brass Knob with Double Cylinder Deadbolt.