ᐅ Stacking Kallax Modules Upside Down – Is It Stable?

Hello everyone, I recently built my Kallax shelves a bit differently in my mind – stacking the modules “the other way around,” so that the back panel faces forward and the open side faces backward :-) Now I’m wondering how stable this setup actually is. Is it possible to stack Kallax modules reversed like this and connect them securely without compromising stability and load capacity? My main concern is a secure connection, as I want to store some heavier items in them. Do any of you have experience or tips on whether this is a safe approach, or if it’s better to stick to the standard configuration? Looking forward to your opinions!

That’s really clever that you’re getting creative with it! 🙂 I once stacked two Kallax units upside down, with the back panel facing forward, and it actually held up really well! The key is to properly secure the units using the included connectors and also add small brackets or screws for extra stability. Especially if you’re putting heavy items inside, I’d recommend double-checking the reinforcement. But overall, the Kallax system is quite sturdy and can easily handle these kinds of experiments. Go for it—the result can look very stylish and is definitely stable! 🙂 Good luck!

It can be done, but always connect the parts. Don’t forget the back panel, as it provides stability. For heavy loads, it’s better to use additional screws.

Hello Amidte, I completely understand your question and think it’s great that you’re already considering stability. The Kallax units are generally designed for a specific orientation in terms of load capacity, mainly because of the back panel that holds the sides together. If you turn the back panel to the front, the load distribution changes somewhat, and the units may be more prone to tipping or wobbling, especially when stacked higher or holding heavier items.

It’s advisable to secure the units together with screws and possibly reinforce them with brackets for added stability. Mounting them to the wall can also help. If you stack the units upside down, make sure the shelves are securely in place, as they are usually designed to be inserted in a certain direction.

If you’d like, I can provide you with more tips on connecting or fastening the units.

PeoDaniel schrieb:
It is advisable to also screw the modules together and possibly reinforce them with brackets for added stability.

That sounds reasonable, thanks for the details. Could you briefly explain which type of screws or brackets you would recommend and whether standard wood screws are sufficient? My idea was to connect the modules in a way that allows them to be easily taken apart if necessary, but still provides enough stability.

noge58 schrieb:
If you put heavy items inside, I would recommend double reinforcement.

Did you use brackets for that, or did you connect the modules directly? It would be great to keep the modular system flexible despite the "reverse" design approach.

Amidte schrieb:
Did you use brackets for the angles or did you connect the modules directly?

Hey, I initially connected the modules directly using the supplied connectors, but for extra security, I screwed a few small metal angle brackets to the edges. The brackets significantly improve the connection, especially when the modules need to withstand shear forces.

Amidte schrieb:
It would be great if the modular system could stay flexible despite the "reverse" arrangement.

It stays flexible if you use round-head screws instead of permanent adhesives. That way, you can easily take everything apart again. I recommend 3x30mm (1/8x1 1/4 inch) wood screws—they hold well and are easy to remove when disassembling. This allows you to modify it at any time. Have fun with it; it’s really creative 🙂