Simplex 919-04-41 Auxiliary Pushbutton Lock with Thumbturn, 5/8" Deadlocking Spring Latch With Latch Holdback, Fits 1-3/4" to 2-1/8" Door, Satin Brass

Simplex 900 Series mechanical door locks are a popular choice for storerooms, service duct doors, and student accommodations. Designed for easy installation in addition to, or as replacements for existing locks. The 900 Series offers deadbolt or automatic spring latch protection. Exterior access by combination.
• Dead latching trigger prevents prying the latch back when the door is closed.
• Automatically relocks, except when latch holdback is activated.
• Door thickness: 1-3/4'' to 2-1/8'' (44 mm to 54 mm)