Keep the entry doors on your commercial or residential property secure with the Marks USA Brass Entry Knob with Double Cylinder Deadbolt. The lock features a brass finish for durability, and a double cylinder deadbolt offers excellent security for your entry door.

Specifications

• Thru-bolted knob/plate assemblies integrate and align with lock body.
• Standard Finish: US 3
• Exterior: Wrought brass, screwless round knob, 2-1/4" diameter on steel reinforced brass plate, 10" x 2-3/4". Two thru posts pass thru lock body. Integral spring-loaded 9/32" spindle.
• Interior: Wrought brass, screwless round knob, 2-1/4" diameter on steel reinforced brass plate, 7" x 2-1/4". Exposed 8-32 mounting. Bolts engage outside plate assembly. Integral spring- loaded 9/32" spindle.
• Cylinder: 5-pin cylinder, 1-1/8" long
• Strike: Conforms to ANSI spec.A115.1, 4-7/8" x 1-1/4" x 3/32" thick, 5/8" curved lip
• Door Thickness: 1-1/4" to 1-3/4"
• Backset: 2-1/2"
• Lock Front: 7-5/8" x 1-1/16", .187" thick, flat or 3° bevel, solid brass. Optional front: 8" x 1-1/4" steel backplate with brass cover plate. 
• Deadbolt: Cast brass, 1" throw
• Latch: Solid brass, 1/2" throw, reversible
• Rocker Switch: Locks or unlocks hub
• Hubs: 9/32" on square with steel security separator
• Hub Lock Arm: Steel, .125" thick
• Case: High pressure cast Zamac, baked enamel finish