ᐅ IKEA Besta – How do I build a combination with different sizes?

Hello everyone,

I have been looking at some Besta units from IKEA and would like to create a combination that connects different sizes in a practical way. My goal is to develop a flexible solution where I can combine both narrow and wider modules without it looking unbalanced or compromising stability.

Specifically, I am interested in the following points:
- How can I securely and stably attach Besta cabinets of different widths (e.g., 60 cm (24 inches) and 120 cm (47 inches)) and heights (e.g., 38 cm (15 inches) and 76 cm (30 inches)) to each other?
- Are there special connectors or fasteners from IKEA or third-party suppliers that I should use?
- How do you handle the back panels when modules have different depths or heights?
- What experience do you have with weight distribution in such varied combinations, especially regarding shelves and doors?

I would appreciate instructions, tips, and also potential pitfalls to watch out for so that I get everything right from the start! Thanks in advance.

Hello Sogu60,

First of all: great question! The issue with the different sizes of IKEA Besta units can actually be solved quite well, even if it seems a bit tricky at first. 😊

Regarding your points:
- For assembling different widths, just use the original metal connectors from IKEA—they work really well. You just need to make sure the carcasses are perfectly aligned; otherwise, it will be unstable.
- I would always use full back panels for each carcass, so don’t try to cover two modules with different depths using only one back panel. If you have gaps, you can visually hide them with color-matched tape or attach a fixed, narrow strip.
- About weight: the shelves can hold quite a lot. For heavy items, you can reinforce the shelves or fix the back panel to the wall for additional stability.

It all sounds more technical than you might expect, but that’s the IKEA business—assemble smartly and keep at it, and it will work! Good luck with your build!

Good morning,

Sogu60, to summarize your question from a technical perspective:

- The standard cam metal connectors from IKEA are suitable for connecting Besta units without any problems. However, make sure that the modules are level with each other to ensure stability and avoid misalignment.
- When combining different heights, it is advisable to align the modules using appropriate spacers or shelf supports. This prevents stress on the connections.
- The back panels are attached separately and provide significant stability. For modules with different depths, the back panels should be mounted separately according to their respective depths.
- Regarding load capacity, keep in mind the maximum weight each shelf can support: standard Besta shelves hold about 25 kg (55 lbs) per shelf. For higher loads, ensure the entire assembly is secured to the wall.

Alternatively, adjustable metal brackets from hardware stores can be used if greater stability is desired.

I hope this precise information helps you.

usbla schrieb:
The standard cam metal connectors from IKEA are perfectly suitable for joining Besta modules.

Exactly.

If you are assembling different sizes, make sure that the base is firmly secured everywhere.

Back panels should always be mounted per module, as this provides stability.

And very important: for taller units, use IKEA metal brackets to further secure the modules.

In short: use original parts, don’t skip back panels, and add brackets if needed.