A common question many people ask is how do they fill in a gap that is left between 2 units in a kitchen run.
Well, there is no definitive answer to this as there are a few options, which we have listed below.
Also, the examples below are based on having an extra 225mm of space left on a planned kitchen run. The size that you have will be different but the same principles apply.
(1) Replan your kitchen
It may sound like a harsh solution but have you looked at all the available units that are available? Our PDF kitchen planner shows you what kitchen units we currently make for our customers.
Take a look at the image below that shows a gap of 225mm that needs to filled somehow (130mm is now the recommended service void gap).
Now look at the image below, by changing the 2 large 1000mm units to 2 x 1100mm units, you now have only 25mm to factor into your design.
The service void area, shown in green, would grow slightly to accommodate any additional space that needs to be concealed.
A bigger corner post would be needed, if concealing the extra space on the other run of units that would butt up to this one.
(2) Use small 150mm wide units
If you don’t want bigger units then go for slightly smaller ones instead and add in 2 x 150mm single highline kitchen units to fill in the extra space. We have swapped out the 2 x 1000mm kitchen base units and used slightly reduced width units that are 950mm wide. This gives you an extra 100mm of space, which gives 325mm in total.
325mm – (2 x 150mm) units leaves you with 25mm. 25mm /2 leaves you with 12.5mm that can be added to your service voids on either side of this run or added to the width of the corner post on the other run.
Here is a picture of how these 150mm wide units could look in your kitchen.
These 150mm units are also multi-purpose, check out the video below to see what you can do with them.
(3) Filler panels
If you feel that there are no other options available to you and there is no way to re-plan your kitchen then you can buy filler panels to help conceal any necessary gaps.
Up to 50% off competitor kitchen prices
At DIY Kitchens, not only do you get a quality rigid built kitchen but you also get it at a fabulous price too! Price your kitchen up on our site and you could see savings of up to 50% off other kitchen quotes that you’ve had.
Take a look at our kitchen price comparison page here.
Real customer kitchens
Get some inspiration for designing your own new kitchen with over 4,000 pictures of our customers’ kitchens that they ordered from us.
How do you fit filler panels? Also are end panels the same finish as the doors? we are getting Luca matt.
October 28, 2025 at 10:52 amHi Tracey, filler panels are cut to size and are either glued into position or fixings like these, can be used to hold them in place.
October 29, 2025 at 6:53 amI can’t figure out how to add a 50mm wide filler panel in between 2 tall broom cupboards in the planning tool so my cupboards can look built in. So on my visual I have a big gap, even if I add the filler options. I can add depth to the front it seems but not width?
March 27, 2025 at 2:36 pmHi Carol, for help & support on the planner, please click the ‘Support’ option at the top of the page in the planner and you can ask your question through the support system. One of our support team will then be able to offer you assistance.
March 27, 2025 at 2:47 pmAre the filler panels finished on all sides? i.e. looking at Norton Oak, these are 100×19; could the 19mm face be used to fill a 19mm gap or would you have to cut down the longer side?
June 12, 2021 at 11:08 amHi, the filler panels on the Norton Oak are fully finished on both sides and all the edges as they are and oak veneer.
June 15, 2021 at 9:55 am