Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms

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  • Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms
  • Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms
  • Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms
  • Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms
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Frequently bought together:


Mila ProLinea Shootbolt Espag

This locking mechanism is called the ProLinea Series 8.  It is often used as a replacement for the Coldseal window lock that was fitted in Coldseal double glazed windows many years ago.


  • 20mm or 22mm Backset
  • Two 8mm mushrooms
  • Simple to fit
  • Suitable for left or right handed windows
  • Suitable for top or side hung windows


This mechanism is also available without mushrooms here.

Tech Spec


  • Material High grade steel & zinc alloy
  • Backset 20mm or 22mm
  • Mushroom Cam Height 8mm 
  • (+/- 1mm for compression)
  • Travel 16mm
  • Faceplate 16mm
  • Size Range Min. 330mm - Max. 1600mm
  • Cycle Tested 50,000 cycles
  • Salt Spray 96 hour

Espag Lock Backset Measuring Guide







To Measure the backset on your window lock you need to measure from the middle of the spindle hole to the front of the face plate. Take a look at the picture below and the red arrows show you where to measure.


The holes that the Bolts go through are a set distance and are the same on ALL window locks (43mm).



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Additional Information

Delivered for just £1.44
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8 Reviews

  • 5
    Coldseal/ProLinea Shootbolt Espag Window Locking System with 8mm Mushrooms -

    Posted by Unknown on Oct 29, 2019

    All satisfactory

  • 5
    Great product

    Posted by Mark suter on Apr 05, 2019

    Thanks good quality products would use again

  • 5
    Window locking system

    Posted by charlie huitson on Jan 04, 2018

    Promote delivery, good product, with useful telephone help if required

  • 4
    Very good service and product

    Posted by Daryl D'Cruz on Apr 26, 2016

    I bought 2 of these gearboxes,after speaking with a customer service advisor a week ago,I didn't have any idea whether I would get these parts,as I kept reading that the parts might be obsolete,so I read up on Handles and Hinges website that if I wasn't sure of the part I required to send them a photo of the old part I had removed from my window. I followed up with a phone call and a customer service advisor looked for my email,found it,went through the measurements,got me to double check one of the measurements he wasn't happy with,and told me exactly which gearbox will do the job,so I ordered 2 of the gearboxes. The gearboxex arrived within the time period stated. They were a perfect match to the gearboxes I removed,and they fitted perfectly,and working well. I am in the process of replacing all my window gearboxes,as I had one fail on me,and it happened to be upstairs,and it cost me a lot of money to get a guy out to open the window and replace the gearbox So I am ordering the rest today. Well done to Handles and Hinges for your customer service and your professionalism. Just one point,may be a bit picky,but could you show your delivery charge,which is VERY reasonable before getting to check out. Thank you and well done. Daryl D'Cruz

  • 4
    window mechanisim

    Posted by Unknown on Apr 16, 2014

    ordered one a few weeks ago needed another one for another window good value for money good service and good company to deal with

  • 5
    good product

    Posted by billy scott on Apr 02, 2014

    quality product reasonably priced

  • 3
    Not Bad

    Posted by johnweygang on Feb 26, 2014

    To be fair although it was the wrong gearbox, (it was not offset) I found it impossible to access the offset version ? do you have? It was however possible to rout out the window frame to fit the gearbox, had to make router bit for electric drill. Lots of work 2 windows working again now. Comment from Handles and Hinges. Thanks for the feedback. As far as we are aware the offset version is no longer made.

  • 5
    Outstanding service!

    Posted by charlie on Jul 31, 2013

    As an ordinary DIY person, I thought I would have a go at replacing the locking gearbox on one of my windows, but I didn't really know what part I needed to do this. However, after reading on the website - "send a picture and we will see if we can identify the product" this is what I did. The next day I had a reply with all the information I needed to order a part in confidence it was the right one. Another two days saw the part arrive that was soon fitted. Outcome, perfectly working window - can't ask for better service!

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