Selection guide

Choosing the right security hardware is not always straightforward.
The correct cylinder, dimensions and level of protection depend on the door, the intended use and your security requirements.

Javena's buying guides help you determine which solution best suits your situation.
Whether you are looking for a new cylinder, comparing different options or learning more about security ratings, this page will help you find the right information.

Which buying guide do you need?

Depending on your situation, you can go directly to the most relevant guide.

Which cylinder do I need?

Not sure which type of cylinder is suitable for your door? This guide helps you identify the most appropriate solution based on the application, door type and security requirements.

View: Which cylinder do I need?

What cylinder size do I need?

Already know which type of cylinder you need but unsure about the dimensions? This guide explains cylinder sizing and how to determine the correct size.

View: What cylinder size do I need?

Thumbturn cylinder vs double cylinder

Not sure whether to choose a thumbturn cylinder or a double cylinder? Learn about the differences, advantages and common applications of each option.

View: Thumbturn cylinder vs double cylinder

Keyed alike or separate keys?

Would you like to operate multiple doors with one key, or do you prefer separate keys for each door? This guide helps you make the right choice.

View: Keyed alike or separate keys?

Emergency function cylinders

Would you like a door to remain accessible from the outside even when a key is inserted on the inside? A cylinder with an emergency function may be the right solution.

This feature is available on various security cylinder systems and can provide additional convenience for homes, apartments and commercial buildings.

View: Emergency function cylinders

Choosing the right security level (SKG / certifications)

Not all cylinders offer the same level of protection. Learn more about SKG ratings, certifications and the differences between standard and high-security cylinders.

View: Choosing the right security level (SKG / certifications)

Replacing a cylinder

Planning to replace an existing cylinder? This guide explains what to consider when selecting a replacement cylinder.

View: Replacing a cylinder

Common questions when choosing security hardware

Choosing security hardware often involves practical questions. In addition to our buying guides, Javena also offers installation guides and technical instructions.

Frequently visited pages include:

• Measuring a door cylinder
• Replacing a cylinder lock
• Using a cylinder measuring tool
• Installing a security escutcheon

These guides can help you determine the correct dimensions, complete an installation or replace existing hardware.

Product categories

Already know which product you need?
Browse the relevant category directly.

Cylinder locks

A wide range of cylinder locks is available for residential and commercial applications, including standard cylinders, security cylinders and thumbturn cylinders.

Locks

In addition to cylinders, mortise locks and other locking solutions are an important part of a complete security hardware system.

Keys & accessories

From spare keys to accessories and additional components for cylinders and locks.

Tools & measuring equipment

Various tools are available for measuring, installing and maintaining security hardware, including cylinder measuring tools and other installation aids.

Need personal advice?

Not sure which solution is right for your situation? Javena is happy to help.

We can assist with:

• Choosing the right cylinder
• Determining the correct cylinder size
• Advice on keyed alike systems
• Security advice and SKG ratings
• Installation and fitting questions

Javena supports customers in parts of West North Brabant, South Holland, Zeeland and surrounding regions. Service at greater distances is available upon request.

Frequently asked questions about security hardware

How do I know which cylinder I need?

This depends on the door type, operating method and desired security level. The guide Which cylinder do I need? helps you determine the most suitable option.

How do I determine the correct cylinder size?

The correct size is determined by measuring the existing cylinder. Our guide Measuring a door cylinder explains the process step by step.

What is the difference between a thumbturn cylinder and a double cylinder?

A thumbturn cylinder has a knob on one side, while a double cylinder is operated with a key on both sides.

When should I choose keyed alike cylinders?

Keyed alike cylinders are useful when you want to operate multiple doors using a single key.

Which security rating do I need?

This depends on the level of protection required. SKG ratings and additional certifications provide guidance when selecting a suitable cylinder.