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What is the depth option for?

This option is chosen when you are purchasing one of our MDF window boards (also called window cills). It allows you to select how deep you want the window board to be.

Window board options as they appear on our product pages

Choose Options:
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Standard Depths Available

150mm
200mm
250mm
300mm
350mm
400mm

These sizes are the most commonly found in homes throughout the UK. However, we can manufacture virtually any depth you need.

How do I know which depth to choose?

You will need to measure from the edge of the wall up to the window frame. This is where the window board will sit when installed. Once you have measured this area, you will want to add a few centimetres to your measurement - this will be used for the overhang. You will notice that most window boards don't finish where the wall does, they protrude over the wall slightly - this is the overhang.

I can't see the size that I need - what do I do?

We have found that these sizes are the most commonly found in homes throughout the UK. However, we know that every house is different and that's why we offer virtually any depth that you need!

Example 1: if you need a depth of 325mm - no problem! Simply choose the depth above (in this case, 350mm) and leave us a note with the requested finished size and we'll do this for you. There isn't any extra charge for this service and the notes can be left within the box at the checkout.

Example 2: if you need a depth of 640mm - again, no problem! Although we don't list this option online, we can manufacture it. All you need to do is drop us a quick email or give us a call and let us know your requirements. We'll price it up for you and should you accept, we'll get the order done!

As you can see, there's really no limit to the depth you can have. Should you have any more questions, ask away - we're here to help.

Check out our bespoke service for more information on custom sizing.

Depths converted from millimetres to centimetres

Our window board depths are listed in millimetres. Here's a list of them converted into centimetres:

  • 150mm 15cm
  • 200mm 20cm
  • 250mm 25cm
  • 300mm 30cm
  • 350mm 35cm
  • 400mm 40cm

Depths converted from millimetres to inches

We know that some people prefer to use inches, so we've converted from millimetres to inches below (rounded up to the closest whole inch):

  • 150mm 6 inches
  • 200mm 8 inches
  • 250mm 10 inches
  • 300mm 12 inches
  • 350mm 14 inches
  • 400mm 16 inches