Lockwood 577 Series – Dual Access Lower Cylinder

The Lockwood 577 cylinder is a dual-access lower cylinder built for use with Lockwood Synergy 3577 mortice locks and other compatible systems. Featuring a 6-pin restricted profile (6RP), this configuration offers enhanced key control and resistance to unauthorized duplication—ideal for institutional and government-grade installations.

Key Features

• Cylinder Type: Oval 577 Lower Cylinder
• Keying Profile: 6RP – 6-pin Restricted Profile for secure key control

Functionality:

• Dual access: enables locking/unlocking from both sides of the door
• Supplied keyed to differ (each cylinder has a unique key)
• Finish: Satin Chrome – corrosion-resistant and architecturally neutral

Construction:

• Solid brass body
• Precision-machined 6-pin tumbler mechanism
• Standard 570 barrel format