Lockwood C4 Dual Access Lower Cylinder – 3P77 & 3P87

Lockwood C4 Dual Access Lower Cylinder – 3P Series

The Lockwood C4 Dual Access Lower Cylinder is designed to complement Lockwood high-security mortice locks and latches, delivering reliable performance in demanding commercial and institutional environments. Built for flexibility and durability, this lower cylinder supports dual-access configurations and integrates seamlessly with Lockwood 3P Series lock bodies, making it suitable for a wide range of heavy-duty applications.

Features

• Designed for use with Lockwood high-security mortice locks and nightlatch systems

• Dual access lower cylinder configuration for independent access control

• Suitable for industrial, commercial, and institutional environments including schools, hospitals, hotels, and public buildings

• Compatible with Lockwood C4 keyway systems for controlled key management

• Supports key-operated external access with turnknob or key operation internally, depending on lock function

• Nightlatch-compatible when paired with the appropriate primary lock body

• Robust construction engineered for heavy-duty use and long service life

• Easily adaptable to suit required lock functions during installation

Available Variants

• C4 3P77 – Dual Access Lower Cylinder – 5KD – 3P77/101CP

• C4 3P77 – Dual Access Lower Cylinder – 5KD – 3P77/101SC

• C4 3P87 – Dual Access Lower Cylinder – 5KD – 3P87/101SC