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Tessi / Baton 6440 Ultra Narrow Central Shutter Lock

  • From Only: £20.84 £18.75 + VAT
  • Free Delivery over £50 + VAT

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Product Name Options Stock Price Tap in Req. Qty
Tessi 6440 'Ultra Narrow' Central Shutter Lock
£20.84 + VAT
£18.75 + VAT
(£22.50 inc VAT)
Key Accessories
Random Coloured Key Tag with Label Window
£0.25 + VAT
(£0.30 inc VAT)
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Kaba Cleansing Silicone Lock Lubricant
£14.21 + VAT
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The Tessi 6440 Ultra Narrow shutter lock is suitable for use on narrow shutters with a depth of only 10mm.


Deadbolt is locked or unlocked by key from either side.


This lock made by Tessi is no longer available to us, but we have the lock with the same footprint manufactured by Baton available and will be supplied if ordered 


Main photo of Tessi / Baton 6440 Ultra Narrow Central Shutter Lock

Keys Supplied2
FinishBrass Cyl
Case Depth10mm
Case Height30mm
Case width200mm
Cylinder finishBrass
Overall Length200mm
Cylinder Projection12mm
Bolt Projection25mm Unlocked, 53mm Locked

Please note:  The data shown includes that of all products listed on the page, including accessories.
Please double-check with us if you're unsure of any individual product specifications.

Hi, guys. My name's Darrel. I'm head of the tech team here at, and thanks for taking some time to have a look at one of our product review videos.

The product that we're reviewing today is the Tessi 6440 Ultra Narrow Roller Shutter Door Lock, and here is the actual lock here. Now, of course, one of the advantages with having a look in on a video is that if you're thinking of having this to replace one that you may have, at least now you can actually see it in the flesh. And I'll go through some of the operations, etc., and I'll get some quick measurements and so forth for you so, if you're thinking that this might be the one that's on your door, then at least then, hopefully, this video will give you a little bit more detailed information.

Now, it comes as standard with two keys, as you can see there, and the keys will operate from both sides. So if I put it in there like that, there you go. That's it from the outside. And from the inside here, I can then bring it back in as well from the inside there. So that's it there. Okay? So that's the actual lock itself. It's available to differ so it can have unique keys, or we can actually get it supplied under special order where they're all keyed alike. So if you have got a load of roller-shutter doors that you want this particular type of locking solution on, we can actually get them all keyed alike for you. So one set of keys will fit them all and it will make it a lot easier for you locking up at night.

So, without further ado, let's get some measurements for you to see if, to give you a bit better idea. Let's have a look at the case itself now, for starters. So the case there, overall, is 200 millimetres. So from there to there is 200 millimetres. The projection here off this actual cylinder, the projection there, comes out to 12 millimetres. That's how far that sticks out there. So if you're bolting that into your roller-shutter door, that's how far that will stick out. And the diameter of that there is 22 millimetres, 21.5 millimetres across there.

Now one of the important things as well is what are the centres there, those fixing centres. So I'll see if I can get you a measurement on that as well. This is going to be, roughly - because I can't really get onto it bang on, but it's 225 millimetres from there to there, those fixing points. If I was to pop the key in there and throw the bolt to its lock position . . . I'll see if I can get a measurement on that for you guys, just in case you need it. And we're now at 285 millimetres, thereabouts. Okay. That's 285 millimetres there. All right?

So, yeah, there's not really much more we can say about this particular lock. I'll give you a width measurement there and the width there is 30 millimetres, that's how wide that is there. It comes with some fixing assemblies as well as standard. And, like I say, it's available with us on

So, you know, if you're looking for a roller-shutter door lock, or your lock is broken and you're not quite sure as to whether or not this is your lock, at least now, hopefully, this video will give you a little bit more information for you to make an informed decision as to whether or not this is the lock suitable for you.

But listen, it really doesn't matter if you're not 100% sure because pick up the phone, have a chat with us, use the Live Chat that we have on our website, or, by all means, pop us over an e-mail or a couple of photos of your door and we'll try and work with you to work out which lock may be suitable.

But from me, Darrel at the . . . The head of the tech team here, and all the guys here at LocksOnline, many thanks for taking the time to have a look at this video, and we'd love to see you as a customer. So, from me, take care. Thank you. Bye-bye.

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