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Era 837 Mortice Window Lock

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  • From Only: £2.01 + VAT
  • Brand: ERA
  • Free Delivery over £100 + VAT

Era 837 Mortice Window Lock Suitable for wooden casement windows. Body Length 33 mm Finish : Brass or White Body Length: 33 mm Body Diameter: 16 mm Backset: 17 mm Bolt Throw: 7 mm. Operation Bolt is locked or unlocked by key from either side. Key sold seperately.

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Product Name Stock Price Tap in Req. Qty
Era 837 Mortice Window Lock White Finish
£17.84 + VAT
£13.38 + VAT
(£16.06 inc VAT)
Era 837 Mortice Window Lock Brass Finish
£17.80 + VAT
£13.36 + VAT
(£16.03 inc VAT)
Optional Extras
Era Key to suit 837 & 838
£4.72 + VAT
(£5.66 inc VAT)
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Kaba Cleansing Silicone Lock Lubricant
£13.79 + VAT
£10.34 + VAT
(£12.41 inc VAT)

Era 837 Mortice Window Lock Suitable for wooden casement windows. Body Length 33 mm

Finish : Brass or White

Body Length: 33 mm

Body Diameter: 16 mm

Backset: 17 mm

Bolt Throw: 7 mm.


Bolt is locked or unlocked by key from either side.

Key sold seperately.

Our product specifications are given in good faith but can be subject to manufacturer change without notice. Should an attribute be of essense to your purchase, please feel free to contact us first for confirmation.


Main photo of Era 837 Mortice Window Lock

Type Of WindowWooden
Type Of WindowWooden
FinishPolished Brass
Body Length35mm
Body Diameter16, 16mm

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 Thanks for tuning in and having a look at some of our
product reviews. Today, we're going to have a look at some window security,
and the one in particular I have here at the moment is a window security
rack bolt, made by Era.

I've taken it out of its packaging, because this packaging isn't the
easiest to get into, so we didn't want to end up delaying you and trying to
hack it open. But the idea of this particular type of window lock is, you
would actually mortise it into...I don't know if you can zoom in there.
It's not really giving a good idea. Unfortunately, I don't a window here to
show you. But the idea is that if you've got a casement window, this would
actually go into the casement, into the actual window itself. Well, it can
actually go into the frame. It doesn't really matter.

And the idea then, is that you would actually physically insert that in,
and then you'd have a hole then in which to pop what they call a "spider
key" in there, or a rack bolt key. I'll show you one of those in a minute,
to give you some sort of idea. But these are really fact, I
don't know if you can actually zoom in there to give you guys an idea. Can
you get in that close there for us, Lee? To give you some sort of idea as
to the type of windows that they are designed for. I don't know - did we
get in there? It's near there, but there you are.

Anyway, the idea is that you would sit that into the casement window. It
comes there with an instruction, a rosette that allows you to finish off
the inside. You'd only have the hole on the inside. And you would then
utilize - I mean, these don't come with a rack bolt key, but you can get
them in kits that do. But this is a typical rack bolt key here. You might
be more familiar with this particular type of key, but it is actually used
for doors for secondary security on doors. And the idea is that when you
put that in there. That allows you then to roll the bolt back like that.
And that's as simple as it is.

In my opinion, I'll have to be honest with you - because this is all
mortised into the window, it's a little bit more hard work, but I think
it's one of the most secure forms of locking a window, if I've got to be
honest. So, to install it, what you would do is, you would drill yourself a
hole into the window, obviously not too far or you'll break the glass. And
then on the end here, I don't know if you can show that then, you've got a
little dimple there.

The idea is that you would then push that down against the frame, take it
away, and then you will have a little dimple where there would be the
impression where you would then drill a hole into the frame to allow the
bolt to come into. So, once you've closed the window like that, you can
then throw this across, and that will throw this bolt then into the frame.
So, very, very secure. In my opinion, I think they are most secure. This
here is the key. This would sit then on the frame to tidy up the hole that
you've drilled. They are very, very secure in my view.

So, what I can do is get some measurements for you, to give you guys some
sort of idea if you're thinking of fitting this on your particular window.
I'll take some measurements now to give yourselves some sort of idea. So,
what we do is, we'll have a look at the depth there for starters. The bowel
depth is 36.6 mm, say 37mm depth. The diameter there, I'll give you some
idea of the diameter; that's 16mm, so the diameter is 16mm. The fore end
height is 44mm. The fore end width is 20mm, and the bolt projection, giving
some sort of idea again on the bolt projection there, that's 8.5mm. So, it
actually projects out 8.5mm.

You use these standard keys as I've mentioned before, which can be
available for doors as well. You could have these particular...they do a
bigger version for a door, so you can have these which will fit then your
doors as well as your windows. So, if you're thinking of putting some
security on your windows and you think that this may fit, then I'd
seriously consider this one. I personally like these as a security product.
There you go. This is Era's version.

I think Yale, and there are a couple of other manufacturers as well who do
similar sorts of versions. We'll be reviewing those on a later date. So,
here you go. I hope this has helped you make the considered opinion, and
thanks for taking the time to have a look. And come and see us some time,
or pop me an email if you need any questions. I'm sure I'll be more than
willing to help you. It's Thank you very much. Good bye.

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