Modular Cylinders
Mul-T-Lock modular cylinders adjust on site, so one part covers many door thicknesses.

Mul-T-Lock Modular Double Euro Cylinder
Product code DOUBLE-EURO-MODULAR
Built to length on the spot. Each side is set on its own, from 31 mm to 120 mm, so one cylinder can be made to fit almost any door.
- Inside and outside lengths chosen separately
- Key or thumb-turn on the inside
- Keyed to your Mul-T-Lock system
Available lengths, per side
Over 80 mm per side is a special order, with a lead time of about 35 days.

Mul-T-Lock Modular Euro Half Cylinder
Product code SINGLE-EURO-MODULAR
The single-sided version, for locks that are only keyed from one side. Made to any length from 31 mm to 120 mm, with the same restricted-key security.
- One keyed side, made to length
- A cost-effective high security retrofit
- Keyed to your Mul-T-Lock system
Available lengths
Over 80 mm per side is a special order, with a lead time of about 35 days.

Mul-T-Lock Modular OVAL 570 Cylinder
Product code Modular OVAL 570 Cylinder
The OVAL 570 cylinder with modular extension parts, for doors thicker than a standard oval cylinder can reach.
- Eight lengths from 34 mm to 92 mm
- Eight cam types to match the lock body
- Keyed to your Mul-T-Lock system
Available lengths
The right length, made on the spot.
The Mul-T-Lock modular Euro profile cylinder offers a quick and simple process for creating any standard length of Euro cylinder, while keeping the quality and security Mul-T-Lock cylinders offer.

Mul-T-Lock Modular Euro Profile Cylinders
Create the right size cylinder on the spot and save time and money. This cylinder can be created in a wide variety of sizes, from 31mm and up to 80mm per side.

Available finishes
Offered in a range of standard finishes, so any possible configuration can be achieved, whether it is a double Euro or a single Euro cylinder.
Catalogue pages and brochures
Who uses Mul-T-Lock modular cylinders?
Mul-T-Lock modular cylinders suit doors that are not a standard thickness, and sites that want a high security retrofit cylinder sized on the spot to save time and money. They keep the quality and security of Mul-T-Lock cylinders.
Frequently asked questions
How long can a modular cylinder be?
Any length from 31 mm up to 120 mm per side. Sizes above 80 mm per side are a special order.
Which locks does a modular cylinder fit?
Modular cylinders are available as double Euro or single Euro cylinders. The modular OVAL 570 fits the same Lockwood mortise locks as the standard OVAL 570, including the 3570, 3580 and 3540 series.
What do you need to know to order one?
Tell us the door thickness and we will build the cylinder to length.
Need a new key for your Mul-T-Lock modular cylinders?
We are an authorised Mul-T-Lock distributor, we can support your restricted keys or master key systems.
The Mul-T-Lock name, the muscleman logo, in the field of locking products, the MTL name, and any other name, mark, or logo used by Mul-T-Lock and marked by a ™ or ® sign, are registered / pending or otherwise owned trademarks of Mul-T-Lock Ltd. and/or its affiliates 2026 © ASSA ABLOY
