Corner base unit and wall unit door alignment


A commonly asked question by customers when designing their new kitchen is how to get the doors of the corner base unit to align with the doors on the wall units directly above it.

Now this is one answer that is not easy to verbalise so hopefully the diagram below with help you to visualise the answer.

This example is based on a 1000mm corner base unit being used.

Wall units and corner base door alignment



Some important points to remember here are:

(1) The corner base unit service void needs to be 130mm wide. Most people forget the space that is needed for the corner post. (indicated by the arrow on the diagram above). The corner post width would be around 5-7cms wide, giving enough space for doors to open and handles not to bash on other doors. The corner post is a variant in your kitchen design and will be aligned to fit with the space that is left.

(2) Two wall units are needed above the 1000mm corner base unit. A 500mm wide unit and a 600mm wide unit.

(3) The space left to fill between the last wall unit and wall will be 30mm. This would need to be filled with some filler material. This could be door or carcase material but ultimately this depends on the door style that you choose.

As you can see from the diagram above, the blue line shows you the vertical alignment of the doors and how it all fits together.

In summary, the total amount of space required is 1130mm for the example above (1000mm corner base / 100mm service void / 30mm corner post space)


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24 thoughts on “Corner base unit and wall unit door alignment”
  • Hannah says:

    How would I align a 900×900 l shaped base unit with wall units? Would I have to use a 600mm l shaped corner unit and two 300mm ones or is there a simpler way? Thanks

    July 10, 2018 at 11:58 am
    • Diy Kitchens says:

      Hi Hannah, yes you would need to use the 600mm L shaped wall unit, along with a 300mm wall unit on either side, to line in with the 900mm L shaped base unit.

      July 10, 2018 at 1:14 pm
  • Dean says:

    What size are the actual doors on the 900×900 highline corner base unit?

    January 19, 2018 at 9:55 am
    • Diy Kitchens says:

      Hi, the actual doors are 715×316 each and used as a bifolding door system.

      January 19, 2018 at 9:56 am
  • Jill Morris says:


    If the corner wall unit is 700mm will the door therefore be 400mm & 800mm the door 500mm?

    Many thanks


    November 5, 2017 at 12:01 pm
    • Diy Kitchens says:

      Hi, A 700mm corner wall unit has a 400mm door, an 800mm corner wall unit has a 500mm door and a 900mm corner wall unit has a 600mm door. Each corner wall unit has a 300mm blanking panel, so the math to work out the door size is (unit width – 300mm).

      November 6, 2017 at 7:57 am
  • William McGilvery says:

    Having not long replaced the electrical items washer and dryer in our utility room. These are non intergrated machines ,we are now changing the entire kitchen and utiity room units etc. My question is this: Is it possible to build the utility room section using the non intergrated machines but building them in under a wider worktop with front doors and units so as they are hidden like intergrated units. or should I replace the machines and go for integrated and standard units.

    September 13, 2015 at 12:41 pm
  • Andrew says:


    When it comes to the service voids, I can see how they work and are concealed on base units as the worktop covers them. However with wall units, what covers the service gap when viewed from underneath? Is it simply that as your eye line will normally be higher that the bottom of the wall units/pelmet so that you just don’t see it?

    February 12, 2015 at 11:35 am
    • Diy Kitchens says:


      You are correct, there would be a small gap on the underside of the wall units but they are well below eye level and the pelmet that is used at the bottom of units makes it virtually impossible to see the gap, unless you put your head underneath and look for it:-)

      February 12, 2015 at 1:05 pm
  • Giles says:

    Hi, Do you still need the corner post on the LeMans2 if you are using the Handless cupbaords?

    December 28, 2014 at 7:38 pm
  • Ian says:

    Very helpful. Could you show an example where the 600mm wall unit is a corner unit, and links to an adjacent wall unit at 90 degrees? Would you need to use a wall corner post / is there such a thing?

    September 30, 2014 at 1:31 pm
    • Diy Kitchens says:


      An example is below. You would normally position a corner wall unit about 30mm from the wall and the adjacent wall unit about the same. This allows for wall and base units to line up with the doors. The space left (marked in green) is then filled in with a corner post, you can use the same material that you use for the base unit corner post(s).

      Corner Wall Unit Join

      October 7, 2014 at 1:23 pm
      • Andy J says:

        Hi I am currently fitting a Luca Kitchen and I am struggling to see how to achieve this as the wall corner door is attached to the blanking panel rather than the cabinet (as per a base unit corner).

        This means I can’t move the blanking panel to make room for a corner post?

        February 12, 2018 at 12:19 pm
      • Diy Kitchens says:

        Hi, if you give our Aftersales team a quick call on 01977 608 418 then they will be able to offer advice to this question.

        February 12, 2018 at 12:43 pm
      • Chris says:


        I’m struggling to see how the above detail works. I’ve set out a corner base unit exactly as per the guide with an 800mm unit set away from the wall 130mm (930mm total length) and the adjoining unit 630mm away from the wall, to allow the full 70x70mm corner post.

        When I draw the above wall units over set away 30mm, they line up perfectly with the base units below which is great. However, I find there is no gap at all between the doors for a corner post, let along space for an ‘L’ corner post as shown.

        Am I doing something wrong?

        July 13, 2018 at 7:13 pm
      • Diy Kitchens says:

        Hi Chris,
        The corner post dimensions are factored into the void space left for the corner units,

        ie 560mm plus the 70mm for the corner post leaves you needing a 630mm space for the depth of the unit.

        The length of a 800mm corner base unit is 130mm as the blank panel of the corner unit is 500mm you will need the extra 130mm to make the corner unit blank panel section line in with the 560mm depth of the other base units.

        500mm plus 130mm void, minus the 70mm for the corner post leaves you with the 560mm depth of a standard base unit.

        July 16, 2018 at 11:48 am
      • Chris says:

        Hi thanks for that.

        I understand the base units and the 130mm void.

        What I’m struggling with is the above diagram of the corner wall units above the corner base units.

        When I draw the 600x300mm wall units 30mm away from the walls as shown, and have it so they line up with the base units below, I don’t end up with the nice ‘L’ shaped corner post shown in the above diagram, as the 300mm doors are so close together. I have it drawn up and can send it if that helps!


        July 16, 2018 at 12:08 pm
      • Diy Kitchens says:

        Hi, just sent you an email.

        July 16, 2018 at 12:20 pm
      • Diy Kitchens says:

        Hi Chris, we advise that a 30mm x 30mm corner post is used on the wall units. The depth of the straight corner unit is 630mm due to the 70mm x 70mm corner post, leaving the wall unit 30mm short. The 30mm corner post is large enough to stop the door handles from clashing and then the base and wall units will align.

        We don’t provide a wall corner post in some ranges, so usually they are created from left over material from panels or a door can be cut down, again depending on the door range.

        July 17, 2018 at 1:28 pm
  • Cornered says:

    Is it possible to perfectly align a 600×600 diagonal corner wall unit with a 1000mm Le Mans Base corner?

    September 23, 2014 at 9:13 am
    • Diy Kitchens says:


      The 2 units you mention will not perfectly align. This is down to the 1000mm le mans base corner actually requiring 1130mm of space due to the service void and corner post.

      September 23, 2014 at 9:47 am
      • Cornered says:

        Thanks. I suppose I could use 30mm panel filler on both sides, but may look fussy. Perhaps a 630×630 diagonal unit could be added to you product range in the future.

        September 23, 2014 at 3:45 pm
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