High Security Doors, Multi Point Locking Systems, Void securing, CCTV, Access Control Systems, Timber, Steel & Jansen Screens
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Shellen Security
Arrow Security Doors
Front Entrance Doors
Residential Anti Vandal Doors
Commercial High Security Doors
Communal Enterance Doors
Jansen Steel Door Sets
Fortcullis Door Sets
Arrow Frames
Frame types
Angled Frame Armour
Hardwood Frame
Arrow Security Locks & Accessories
Our large range
Multi Point Lock
Cylinder Locks
Pad Locks
Key Blanks
Arrow Interactive Cliq
The latest technology
What is Interactive Cliq?
Interactive Cliq Features
Interactive Cliq Specification
Cylinder Locks
Innovators in the design, manufacturing and installation of security doors.
Shellen Security provide a wide range of cylinders that addresses the ever-increasing security needs of institutions, businesses and homeowners worldwide.

As they are produced with the highest-quality materials, cylinders are built for doors, cabinets, drawers, vending machines and other security applications. Meeting the world's most stringent international standards and dedicated to making patented key control the highest priority, Mul-T-Lock cylinders have been chosen by millions of customers in nearly 100 countries who are seeking the very best high-security solution.
Euro Profile Cylinder
Cylinder Locks
Compatible with locks and lockcases using Euro profile cylinder.
U.K. Oval Profile Cylinder
Cylinder Locks
Compatible with UK oval lock cases.

Swiss Profile Cylinder
Cylinder Locks
Compatible with mortise lock cases using Swiss profile cylinder.
Special Reinforced Cylinder
Cylinder Locks
Enhanced resistant to breaking attempts.
Emergency Cylinder
Cylinder Locks
Operated with key inserted and rotated on opposite side. Enables both sides to be permanently operational.

Anti-Ligature Thumbturn
Cylinder Locks
Innovative thumbturn mechanism with emergency override. The product has been specially designed to address the risk of self-harm within psychiatric and probationary type accommodation facilities.
Mortise Cylinder
Cylinder Locks
Compatible with residential and commercial door locksets. Interfaces with locksets of major brands (see available cams). Can retrofit a 'Jumbo' cylinder with an adaptor ring.
3-Way Model 700
Cylinder Locks
Heavy duty multi-point (3-way) rim lock with latch functionality. Suitable for 1.5 to 2.5 meter doors. R.H.or L.H.installation. Push or pull installation.
Contact us
Where to find us?
Unit A2 - Northfleet Industrial Estate
Lower Road
Northfleet, Kent
DA11 9SN

T: +44 (0) 845 505 0666
F: +44 (0) 845 505 0667
E: info@shellen.co.uk
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T: + 44 (0) 845 505 0666       E: info@shellen.co.uk
A Division of Shellen Construction Ltd. Reg. Office: College House, 17 King Edwards Road, Ruislip, Middlesex HA4 7AE
Mul T Lock Authorised Distributor Secured by Design - Official Police Security Initiative Chas - Accredited Contractor BM Trada - Registered Firm Certification BM Trada
BM Trada