Thumbturn Euro Cylinder Door Barrel (with key on one side)

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  • Thumbturn Euro Cylinder Door Barrel (with key on one side)
  • Thumbturn Euro Cylinder Door Barrel - Measuring Guide
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Thumbturn locking euro cylinder barrels for use with UPVC & aluminium doors.

Various sizes available. Come with 3 keys. 

Available in Brass or Chrome.

From £9.88 depending on total length of barrel


  • 1 Barrel with key access on external side and Thumbturn on internal side
  • 3 keys
  • 1 fixing screw

 Extra keys available only £2.95 + VAT each.   That's cheaper than parking in town.

 ** Please note: extra keys are cut to order and will not be refunded or replaced if you order the wrong size cylinder  **


How to measure and order:

  • Starting on the Thumbturn side, measure from one end of the barrel  to the centre of the fixing screw hole - this is Size A.
  • Repeat on the key turn side, measuring to the centre of the screw hole - this is Size B
  • It is important that the thumbturn side is entered as Size A
  • Measurements are in 5mm increments.






These thumbturn euro cylinders barrels are suitable for UPVC doors, patio doors and french doors. They can be used on aluminium and timber installations.

All of our Euro Barrel cylinders come complete with 3 keys and copys for the cylinders can be obtained when you purchase.

Our cylinders conform to BS 1303 EN Classification 1 6 0 0 0 C 6 0. 



Door Measuring Cylinder Guide


Simple steps to help you measure the correct cylinder for your door.




1. Measure from the middle of the bolt hole (C) to edge of the cylinder on side A (thumbturn side)

2. Measure from the middle of the bolt hole (C) to edge of the cylinder of side B


Enter these sizes in the order form and you will get exactly the same size cylinder that came out of your door.

Remember to make sure you measure the Thumbturn size first.


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Additional Information

Cylinder Measuring Video:
How to Measure UPVC Door Cylinder Video
Delivered for just £2.39
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46 Reviews

  • 5
    Thumbturn replacement cylinder

    Posted by MG on Mar 23, 2020

    Straightforward fitting, no instructions needed - however the ordering was a different matter. One must be aware of the reason for the two measurements required to get the length required.

  • 4

    Posted by Unknown on Mar 06, 2020

    A decent cylinder at a decent price!

  • 5
    Good quality, smooth operation

    Posted by M Fox on Feb 18, 2020

    Excellent service, prompt delivery.

  • 5

    Posted by Katrina on Feb 14, 2020

    Game changer!

  • 4
    Replacement lock cylinder

    Posted by Simon Kirke on Jan 18, 2020

    Prompt delivery, works perfectly

  • 5
    Thumb turn lock

    Posted by Colin Burns on Nov 25, 2019

    Does what it ssys on the tin

  • 5

    Posted by Stuart on Nov 09, 2019

    Ordering was easy, order was customised as my instructions, delivery fast and product good quality.

  • 5
    Thumbturneuro lock

    Posted by Garry dale on Oct 28, 2019

    Fast delivery AAAAAAAAAA++++++++++

  • 5
    Euro Locks

    Posted by richard long on Oct 23, 2019

    Just what I wanted with prompt delivery. Obviously time will tell how they perform but I see no reason to fault them as they seem to be of good quality.

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