intelligent and intuitive locking mechanisms

ABS Master Cylinder

The ABS Master cylinder is the most state-of-the-art way to protect your home. Endurance composite doors are fitted with these advanced locking mechanisms. We’re so confident in its features that in the unlikely event it should fail, you’ll benefit from the £2000 Security Guarantee. Activate yours today.

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These locking mechanisms are precision-engineered to respond when they come under attack from potential intruders, activating their measures to keep your property and your loved ones safe. Invest in the most solid and secure composite doors from Endurance.

Our Compatible Handles

Heritage Lever Handle

Classic Lever Handle - Black

Classic Lever Handle

Heritage Lever Pad Handle

Gold Architectural Lever Handle

Architectural Lever Handle

Pull Handles

Composite Door Security

Market-Leading Approval & Accreditation

Total Peace of Mind

Our composite doors come equipped with the ABS Master cylinder to give you total peace of mind. This high-security locking system meets the requirements of the British Kitemark, TS007 3* and Sold Secure Diamond testing criteria. Additionally, it is accredited with Secured by Design (SBD) approval as part of the Police Crime Preventions Initiative.

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Resist Most Prevalent Forced Entry Attempts

Advanced Security Solution

The ABS Master cylinder is specifically designed to combat and resist all known methods of attack on a euro cylinder, so any potential intruders will be kept at bay. Even after forced entry attempts, they will remain secure and in most cases will still be operable from the inside. Our cutting-edge composite door security solutions are designed with you and your safety in mind.

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Design Your Door Image


Our HomeView Door Designer offers a simple to follow step by step process, enabling you to construct your ideal composite door and see how it looks on your home.

Active Snap Protection

If your composite door is attacked, ABS triggers its intelligent systems. This activates a hidden lock inside its solid Molybdenum core to ensure your door stays completely secure.

Our composite door locking mechanisms are carefully designed and refined to keep you and your loved ones safe. It is this precision-engineered functionality that has earned the ABS cylinder its impressive approval from Kitemark, Sold Secure Diamond Grade and SBD. You can be sure that our high-security composite doors will keep your property safe and sound.


anti snap composite door locks
most secure composite door locks

Solid and Secure

The ABS Master cylinder features no snap lines to maximise its resistance if it is attacked from the outside. This means it will still be operable from the inside with the key.

Our composite door locking mechanisms are carefully created to ensure maximum security and functionality. When the ABS resists an intruder, you shouldn’t have to suffer any inconvenience. With the ABS cylinder, will always work and perform highly for you to meet your needs.

Anti-Pick Pins and Drill Protection

Commonly seen methods of forced entry that our secure composite doors are able to resist include picking, drilling and bumping. The ABS Master cylinder is designed to resist these and stop potential intruders in their tracks.

To maximise this aspect of security, the ABS cylinder includes hardened anti-drill pins throughout its body and plug. Its anti-pick and anti-bump pins enable multi-zone pick and bump key protection. This means you’ll be able to relax in your home, safe in the knowledge that your new composite door will keep you safe and sound.

highest security composite doors
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