Window locks for UPVC
Replacement uPVC Window Locks
Find replacement window lock mechanisms and gearboxes for double glazed windows, including Espag locks, shootbolt gearboxes, keeps and fixings.
Not sure which window lock you need?
Our measuring guide shows you which sizes to check before choosing a replacement window lock.
View the Window Lock Guide ›Shop window locks and parts
Choose your lock type or find the keeps and fixings you need.
Window Lock Info — Quick Guide
Gearboxes for uPVC Windows
A window gearbox is the central part of many three-piece locking systems. In many cases, the gearbox can be replaced on its own if the rods or shootbolts are still in good condition.
To remove it, you will usually need to take out the handle bolts and the screws securing the mechanism.
Full-Length Window Locks
Full-length Espag locks are still used on many windows. Some older mechanisms are no longer made, but suitable alternatives may be available.
Check the backset, overall length and whether the mechanism is offset or inline. Our window lock measuring guide explains what to measure.
Keeps and Screws
Keeps and fixings may be needed when fitting or replacing a window lock. An alternative mechanism may need different keeps or some adjustment, depending on the window.
Need help identifying your lock? Call us on 01204 652211.
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£5.94 Inc. VAT£4.95 Ex. VAT -
Kenrick Excalibur UPVC Window Lock
Kenrick
£23.92 Inc. VAT£19.93 Ex. VATKenrick Excalibur UPVC Window Lock. Exact replacement for the Kenrick Excalibur window gearbox. Easy to fit no drilling or routing needed.£23.92 Inc. VAT£19.93 Ex. VAT -
GU Guardian Window Gearbox, 22mm Backset
GU
£23.00 Inc. VAT£19.17 Ex. VATGU Guardian Window Gearbox THIS PRODUCT IS NO LONGER MADE BUT WE DO OFFER A PART THAT WILL REPLACE IT.£23.00 Inc. VAT£19.17 Ex. VATQty in Cart: 0Quantity:Price:£23.00 Inc. VAT£19.17 Ex. VATSubtotal: -
Coldseal Tallon Replacement Window Lock KIT - 1200mm
Maco
This kit is a REPLACEMENT / WORK AROUND for the Tallon window lock that was fitted by Coldseal windows. The original lock is no longer made and this kit has been put together through trial and error...Qty in Cart: 0Quantity:Price:Subtotal: -
Kenrick Sabrelock Window Lock
Kenrick
£44.45 Inc. VAT£37.04 Ex. VATKenrick Sabrelock The Kenrick Sabre lock is an exact replacement for the Sabrelock from many years ago. It is a straight swap over with no extra drilling or routing required.£44.45 Inc. VAT£37.04 Ex. VAT
Siegenia Aubi Window Gearbox
Sigenia Aubi
£0.14 Inc. VAT£0.12 Ex. VATSiegenia Aubi Shootbolt Espag Gearbox for upvc double glazed windows Faceplate: 160mm x 16mm (including serrations) Gearbox: 58mm x 7mm + b£0.14 Inc. VAT£0.12 Ex. VATQty in Cart: 0Quantity:Price:£0.14 Inc. VAT£0.12 Ex. VATSubtotal:
Offset- Offset UPVC Window Lock
Handles & Hinges
£0.00 Inc. VAT£0.00 Ex. VATThis window lock is no longer made so this is a solution that works and has been successfully fitted by many customers. The lock will work in place of your old "offset offset" window lock and some...£0.00 Inc. VAT£0.00 Ex. VATQty in Cart: 0Quantity:Price:£0.00 Inc. VAT£0.00 Ex. VATSubtotal: