Vacuum wall in darkroom advice

Hi.
I was offered a vacuum wall (KLIMSCH vacuum wall 160x200cm). It's a bit of a dream for me to have one. Does anyone have experience with the construction of these walls. I assume it is a grid of 1-2 mm holes in metal sheet on top of a box, divided in several channels to even out the suction?

Ive worked with one, but didn't pay much attention how it worked.

Is it complicated to construct one? I really can't find any online sources for these walls. It does not sound super complicated, but maybe I am underestimating it a bit?

thanks.

That is a big system, to reproduce is possible but you would need to have a few good skills . I have worked with vacuum walls and tables for years, they are
great for multiple registration work , for using on a wall for silver printing you need a very good pump system to hold the paper. These walls were designed
for split panel work in large mural houses, I worked at Jones & Morris Murals in Toronto and we had these types of walls

If you can get it for a good price buy it rather than try to reproduce it is what I would say.

Thanks for the input. I find the price good, but it's a bit of a drive to get it.

Smaller ones for the horizontal enlargers, they would be simpler to make DIY I guess. Any input on those? Ive seen some, but they often dont work anymore.