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UPVC Window Lock Mechanism

Huge Range of Replacement UPVC Window Locks

We stock a large range of upvc window lock mechanisms. The selection we offer covers the most common types used over the last 30 years. These window locks have been primarily used on uPVC windows although they have also been fitted to timber windows occasionally.

If this is your first time buying a replacement upvc window lock, you may find our identifying guide useful. We also detail lock information on the product pages.

What is a Window Lock Mechanism?

A upvc window lock mechanism is the gearing part inside a window that's driven by a handle. The upvc window lock below shows one of many different types.

Dimension A- Backset
Dimension B- Mushroom Height
Dimension C- Rail Length
Dimension D- Rail Width(Click on link below)
The long metal plate is the rail and the part in the centre of the window lock is the gearbox.

Window Lock Identification Guide, Click Here.



Aubi/Saracen Window Lock Extensions

Aubi/Saracen Window Lock Extensions

Each extension has a shootbolt, in addition the 840-1150mm and 1100-1410mm extensions have a...
£8.50
... more info
Aubi/Saracen upvc window lock gearbox mechanism

Aubi/Saracen upvc window lock gearbox mechanism

This Aubi/Saracen window lock mechanism comes in three pieces. The extensions are sold...
£8.45
... more info
Avocet/WMS Inline Espagnolette upvc Window Locks

Avocet/WMS Inline Espagnolette upvc Window Locks

This Avocet espagnolette upvc window lock should have either Avocet or WMS printed into the...
£6.95
... more info
Avocet/WMS Offset Espagnolette upvc Window Locks - U Rail

Avocet/WMS Offset Espagnolette upvc Window Locks - U Rail

This Avocet espagnolette upvc window lock should have either Avocet or WMS printed into the...
£6.95
... more info
Avocet/WMS Offset Slimline upvc Window Locks - U Rail

Avocet/WMS Offset Slimline upvc Window Locks - U Rail

This Slimline Avocet espagnolette upvc window lock should have either Avocet or WMS printed...
£7.95
... more info
Kenrick Excalibur upvc Window Lock Gearbox

Kenrick Excalibur upvc Window Lock Gearbox

The Kenrick Excalibur upvc window locking system comprises of three pieces. This part, the...
£8.45
... more info
Maco Inline Espagnolette upvc Window Lock Mechanism

Maco Inline Espagnolette upvc Window Lock Mechanism

This MACO espagnolette upvc window lock mechanism should have MACO printed into the rail,...
£6.95
... more info
Maco RAIL Window Lock Espagnolette Mechanism

Maco RAIL Window Lock Espagnolette Mechanism

This MACO RAIL espagnolette upvc window lock mechanism should have MACO printed into the...
£9.20
... more info
Maco MK2 Shootbolt upvc Window Lock Gearbox

Maco MK2 Shootbolt upvc Window Lock Gearbox

This MACO MK2 upvc window lock is a three piece system. The MACO gearbox is in the centre of...
£11.45
... more info
Maco MK2 Short upvc Window Lock Gearbox

Maco MK2 Short upvc Window Lock Gearbox

This MACO Short upvc window lock is a three piece system. The MACO gearbox is in the centre of...
£10.95
... more info
Maco MK1 upvc Window Lock Gearbox

Maco MK1 upvc Window Lock Gearbox

This MACO upvc window lock is a three piece system. The MACO gearbox is in the centre of the...
£8.95
... more info
Maco Offset Espagnolette upvc Window Lock - Flat Rail

Maco Offset Espagnolette upvc Window Lock - Flat Rail

This MACO espagnolette upvc window lock mechanism should have MACO printed into the rail,...
£6.95
... more info
Maco upvc Window Lock Gearbox - Extensions

Maco upvc Window Lock Gearbox - Extensions

The extensions come in different size ranges. Please measure the total length in mm when all...
£8.40
... more info
Mila Window Lock Inline Espagnolette

Mila Window Lock Inline Espagnolette

This Mila window lock should have MILA printed onto the faceplate (newer versions "2009"...
£9.95
... more info
Mila Inline Shootbolt upvc Window Lock Gearbox

Mila Inline Shootbolt upvc Window Lock Gearbox

This Mila Window lock comprises of three pieces. This item is the Mila Window Gearbox only....
£10.45
... more info
Mila upvc Window Lock Gearbox - Extensions

Mila upvc Window Lock Gearbox - Extensions

The extensions come in different size ranges. Please measure the total length in mm when all...
£9.50
... more info
Mila Offset Espagnolette upvc Window Lock - U Rail

Mila Offset Espagnolette upvc Window Lock - U Rail

This mila offset espagnolette upvc window lock is silver in colour with black or grey plastic...
£0.00
... more info
Sold Out
Mila Offset Shootbolt upvc Window Lock Gearbox

Mila Offset Shootbolt upvc Window Lock Gearbox

This lock has been discontinued by the manufacturer. The Mila Inline Shootbolt Gearbox is a...
£13.95
... more info
Sold Out
Saracen upvc Window Lock Gearbox - Deadbolt

Saracen upvc Window Lock Gearbox - Deadbolt

This Saracen upvc window lock comes in three pieces. The Saracen gearbox is in the centre of...
£8.95
... more info
Saracen upvc Window Lock Gearbox Extensions - Deadbolt

Saracen upvc Window Lock Gearbox Extensions - Deadbolt

The extensions are for Saracen Deadbolt Shootbolt Gearboxes. The come in different size...
£8.50
... more info