ᐅ KALLAX as a media shelf is too unstable for holding a lot of electronic equipment.

Hello everyone, some time ago I bought a KALLAX shelf from IKEA to use as a media shelf, mainly to organize all my electronics like gaming consoles, receivers, amplifiers, and various AV components. However, I’m increasingly unsure if the shelf is stable enough to support the number and weight of the devices. Especially with heavier equipment, I have noticed some sagging on the shelves and wonder if other users have had similar experiences or if I might be assembling it incorrectly or overloading it.

My main question is: Is the KALLAX shelf fundamentally too unstable as a media shelf with a lot of electronics — meaning multiple heavy devices — or are there simple ways to improve its stability? And if so, how do you handle this in practice? I appreciate any tips and experiences!

Sigi39 schrieb:
Is the KALLAX shelf even stable enough for the amount and weight of the equipment?

Hey, I totally get what you mean! The KALLAX is really convenient and looks good, but the shelves are made of relatively thin particleboard. If you put several heavy devices on them, the shelves can bend a bit.

For example, I added small additional wooden strips underneath the shelves, which significantly increased their load capacity. 🙂 Otherwise, it’s better to skip filling some compartments if you have really heavy equipment and maybe avoid loading all of them fully. You don’t want your expensive gear to come crashing down, right? 😉

Sigi39 schrieb:
Is the KALLAX shelf fundamentally too unstable as a media shelf with lots of electronics?

The KALLAX can support moderate loads, but not very heavy equipment.
Reinforce the shelves with thin wooden strips or metal brackets.
Alternatively, choose a shelf unit with thicker shelves.

Wesley schrieb:
small additional wooden slats installed under the shelves, which significantly increased the load capacity

Interesting approach, but it should be considered that the KALLAX shelves were originally designed for lighter loads.

Sigi39 schrieb:
Slight bending of the shelves noticed

This indicates an unsuitable load. My recommendation would be to check the actual load capacity of the particleboard or MDF panels used. Manufacturers usually specify a maximum load per shelf, which should not be exceeded.

I also wonder whether the fastening system (e.g., dowels, screws) on the shelf itself could be a weak point. Reinforcements only help if the supporting connections are sufficiently stable.

Thanks in advance for the quick responses!

tetan schrieb:
Reinforce the floors with thin wooden slats or metal brackets

That sounds good. I'm especially interested to know if there are ready-made retrofit options available or if you built this yourself, and how exactly.

difepeo schrieb:
I also wonder if the shelf’s mounting system itself might be a weak point.

I can definitely imagine that. The assembly instructions showed everything clearly, but I have had to put some strain on the shelf when rearranging the electronics.

Has anyone had experience whether adding extra screws or special connectors significantly improves stability? Or is the plain wooden board the real issue?

On the topic of using KALLAX as a media shelf with lots of electronics:

1. Check load capacity: KALLAX shelves are limited to about 13-15 kg (29-33 lbs) per compartment.
2. Avoid: Fully loaded compartments should only hold lightweight equipment; heavier devices are better placed at floor level.
3. Reinforcement: Middle crossbars or U-profiles help prevent sagging.
4. Assembly: Tighten screws securely, and if needed, reinforce dowels with wood glue.

Tip: Place lightweight equipment at the top, heavier devices at the bottom, and avoid fully loading all compartments. This improves stability and allows better ventilation for the devices.