We quickly decided on a BESTÅ cabinet to conceal all our belongings. However, we soon realized that the cabinet would likely accumulate dust on top, which posed a problem. So, once again, we gathered our tools to transform the cabinet into a wall unit. But first, we needed to construct the frame.
First, we focused on the structure of the ‘floor’ cabinet. The next pictures illustrate the assembly of the entire cabinet. As you can see, the spaces above and on the sides tend to collect dust.
To address this issue, we filled the gaps by attaching a wooden frame to the sides of the cabinets using simple screws, ensuring it was at the same height as the frame. Next, we secured the MDF sheets in place.
The MDF sheets are the same thickness as the BESTÅ Tofta doors (18 mm), allowing the entire cabinet to function as an ‘insert’ within the surrounding MDF paneling after the silicone finish and paint job. The pictures illustrate what I mean. The thickness matches that of the BESTÅ Tofta doors perfectly.

And here is the final result: a fully integrated wall with storage.

See Uwe’s updated version of this IKEA Wall Storage Hack.