A 90mm Euro Profile Double Cylinder is a high-capacity security component specifically engineered for oversized or high-performance door sets. Typically required for FD90 and FD120 timber fire doors, reinforced steel security entrances, or modern triple-glazed composite doors with deep decorative moldings, this 90mm Euro Profile Double Cylinder provides the necessary reach to clear thick door leaves and heavy-duty handle backplates.

By offering key-operated access from both the internal and external sides, 90mm Euro Profile Double Cylinder provides a “hardened” entry point suitable for both premium residential and high-traffic commercial environments.

At 90mm in total length, this cylinder is a specialized hardware solution. In a “Double” (Key/Key) configuration, the door remains a complete barrier regardless of which side you are on, making it the preferred choice for insurance-compliant security.

Key Benefits

Glass Panel Integrity: Essential for doors with side-lights or large glazed inserts. Because a key is required to exit, an intruder cannot simply smash the glass and turn a thumbturn to open the door.
Extreme Reach: Standard 60mm–70mm cylinders will “get lost” inside thick 64mm+ door leaves. The 90mm length ensures the barrel sits flush with the handle furniture for easy key insertion and turning.
Anti-Snap Engineering: High-quality 90mm Euro Profile Double Cylinder feature a sacrificial “snap-line.” If an intruder applies force with mole grips, the barrel breaks at a predetermined point, leaving the central locking cam intact and the door deadlocked.
Commercial Durability: Built to handle the heavy-duty cycles found in schools, hospitals, and high-end residential blocks where larger, heavier door sections are the standard.

Precision Sizing: Getting the Offset Right

Because a 90mm Euro Profile Double Cylinder is significantly longer than average, choosing the correct offset is vital for both security and aesthetics. Euro cylinders are measured from the center of the fixing screw hole to each end. Common 90mm configurations include:

45/45 (Symmetric): The fixing hole is exactly in the center. This is the standard for 64mm–74mm timber doors where the mortice lock is installed dead-center.
40/50 or 35/55 (Asymmetric): Often required for modern composite or uPVC doors where the external face is thicker due to decorative cladding or weather-stripping, shifting the locking point off-center.

Pro-Tip: For maximum security, the cylinder should never protrude more than 3mm from the face of the handle. Any protrusion beyond this provides an easy “purchase” point for lock-snapping tools.

Technical Specifications of 90mm Euro Profile Double Cylinder

Feature	Detailed Specification
Total Length	90mm
Cylinder Type	Double (Key/Key Operation)
Security Rating	BS EN 1303 & TS007 (1 or 3 Star)
Pin Configuration	6-Pin High Security (Anti-Pick)
Protection Tech	Anti-Snap, Anti-Drill, Anti-Bump, Anti-Pick
Material	Solid Brass (Available in Satin Nickel or Brass)

Recommended High-Security 90mm Cylinders

For the ultimate in residential and commercial protection, the Yale Platinum 3-Star is the gold standard. It is Sold Secure Diamond approved and TS007 3-Star rated. If attacked, its unique “V-Pin” system locks the central cam, making it one of the most difficult barrels on the market to bypass.

For a robust, professional-grade solution for internal or secondary entry points, the ERA 6-Pin Euro Cylinder offers exceptional durability. It features multiple hardened steel anti-drill pins and a 6-pin “mushroom” driver system that makes picking nearly impossible for standard intruders.

Maintenance for Longevity

To keep your 90mm Euro Profile Double Cylinder operating smoothly, never use oil or WD-40, as these attract dust that can jam the delicate internal springs. Instead, use a dry graphite lubricant or a specialized PTFE lock spray once a year to ensure the key slides in and turns with zero resistance.

Secure your doors with this 90mm Euro Profile Double Cylinder, designed for smooth operation, durability, and reliable locking. Each cylinder is supplied with its own unique key, making it ideal for residential, commercial, and multi-unit properties where independent access is needed. The 90mm Euro profile size ensures a precise and secure fit for standard doors, providing a robust and practical locking solution.

Manufactured from premium materials, this 90mm Euro Profile Double Cylinder resists tampering, forced entry, and daily wear, offering long-term performance. Its keyed-to-differ feature allows each cylinder to operate independently, making it perfect for apartments, offices, and multi-door installations. Easy to install and built for everyday use, this double cylinder lock combines strength, convenience, and peace of mind.