LOCKWOOD TWIN – Cylinders & Key-In-Knob Kits – Mortice, Patio, Cupboard & Oval Options

Lockwood TWIN® Lower Cylinder for Selector 3777 Dual Access Mortice Locks

This Lockwood TWIN® lower cylinder is purpose-built for use with the Lockwood Selector 3777 Dual Access Mortice Lock, enabling independent access control from the lower cylinder position. Supplied Master Keyed (MK) and engineered for flexibility, it is ideally suited to commercial, institutional and controlled-access environments requiring secure dual-entry functionality.

Product Overview

Designed to operate as the lower cylinder in dual access configurations, this unit allows separate locking hierarchies for upper and lower access points. The integration of the Lockwood TWIN high-security keying system ensures strong key control, resistance to unauthorised duplication and seamless incorporation into master key systems.

Key Features

• Designed specifically for Lockwood 3777 Dual Access Mortice Locks

• Lower cylinder configuration for dual-entry access control

• Supplied Master Keyed (MK) for integration into hierarchical key systems

• Lockwood TWIN® high-security keying system

• Standard U Cam included (interchangeable to suit application)

• Accepts Lockwood Generation 6 barrels

• Securiturn compatible

• Non-handed design for installation flexibility

• Supplied in trade pack format

• Suitable for commercial and institutional applications requiring controlled access separation

Available Variants

• 570E 3777 Dual Access Mortice Lock Lower Cylinder MK – 570ET1/77SC

• 570E 3787 Dual Access Mortice Lock Lower Cylinder MK – 570ET1/87SC

• 570E Cylinder 65 mm Long – X Cam MK – 570ET1/65XSC

• 577 Dual Access Lower Cylinder MK – 577/T1DOEMDPSC

• 590 Cylinder – R Cam MK – 3540T1NOEMDPSC

• 670 Cam Lock MK – 670/T1NTEMDPSC

• 680 Patio Bolt Cylinder MK – 680/T1NEEMDPSC

• 693 Cupboard Lock – “A” Configuration MK – 693AT1SC

• 693 Cupboard Lock – “B” Configuration MK – 693BT1SC

• 7105 Key-in-Knob Cylinder MK – 7105T1NEEMDPSC

• 8217 Astra Oval Cylinder MK – 8217T1NOEMDPSC

• 8221 Key-in-Knob Cylinder Kit (012) PK=10 – 8221ET1012KITSC

• 8221 Key-in-Knob Cylinder Kit (013) PK=10 – 8221ET1013KITSC

• 8221 Key-in-Knob Cylinder Kit (024) PK=10 – 8221ET1024KITSC

• 8221 Key-in-Knob Cylinder Kit (034) PK=10 – 8221ET1034KITSC

• 8221 Key-in-Knob Cylinder Kit (045) PK=10 – 8221ET1045KITSC

• 8221 KNK (PD Type) Cylinder MK – 8221T1NEEMDPSC

• 8466 Threaded Round Cylinder (Kawneer) – Deadlatch Cam – 8466T1FREMDPSC

• 8466 Threaded Round Cylinder (Kawneer) – Latching Cam – 8466T1KREMDPSC

• 8474 Cylinder MK – 8474T1NEEMDPCP