How to Identify Your Multipoint Lock

Multipoint locks are commonly fitted to uPVC, composite and aluminium doors. They secure the door at multiple points along the frame when the handle is lifted and the key is turned.

If your lock has failed and you need a replacement, identifying the correct model can seem confusing because there are many brands and different measurements.

This guide explains the key measurements you need so you can quickly identify your existing lock and find the correct replacement.

Before this however it is important to understand the five different types of locking operation which we have detailed below. Once you have read this please follow steps 1 to 5 below.

Step 1 – Identify the Lock Manufacturer

The first step is to check the brand of your multipoint lock.

Most locks have the manufacturer’s name stamped on the metal strip (faceplate) or on the central gearbox.

Common multipoint lock brands include:

• ERA
• Fullex
• GU
• Winkhaus
• Lockmaster
• Yale

Finding the manufacturer makes it much easier to locate the correct replacement.

Step 2 – Measure the Backset and Centres

Two of the most important measurements are the Backset and Centres (PZ).

Backset

The backset is the distance from:

the front of the faceplate → to the centre of the keyhole (cylinder hole).

This measurement determines how far the lock sits inside the door.

Typical backset sizes include:

• 35mm
• 45mm
• 55mm

Centres (PZ Measurement)

The centres measurement is the distance between:

the centre of the handle spindle → and the centre of the cylinder hole.

Common PZ sizes include:

• 92mm (most common)
• 70mm
• 68mm

If this measurement is incorrect, the door handle and cylinder will not line up correctly.

These are shown as measurements A (Backset) and B (Centres) below:

Step 3 – Identify the Locking Points

Multipoint locks use several locking points along the strip to secure the door.

These may include:

• Hooks
• Rollers
• Deadbolts
• Mushrooms

Make a note of the type and order of locking points on the strip, as this helps identify the exact lock model.

Step 4 – Measure the Locking Point Positions

Next, measure the distance from the centre of the spindle to each locking point on the strip.

These measurements help confirm the correct replacement multipoint lock.

Different manufacturers position the locking points in different places, so this step is important when matching the exact model

These are shown as C, D, E and F on the above diagram.

Step 5 – Measure the Faceplate

Finally, measure the width of the faceplate (the metal strip on the edge of the door).

Common faceplate widths include:

• 16mm
• 20mm
• 25mm

You should also check whether the faceplate is:

• Flat plate
• U-rail (U-shaped)

This ensures the new lock fits properly into the door.

Now you have measured all the necessary parts you are ready to search through our selection available here (arranged by manufacturer as per step one) and find your new multipoint lock.

Our expert team also highly recommend the new Versa Multi-fit Replacement Multipoint Lock which has been designed to replace the largest range of multipoint locks on the market.

If you need further help why not complete our interactive form which can be downloaded here or by clicking the below icon:

Once completed please return the form to us at info@lockshopdirect.co.uk and we will direct you to the right lock!