И вот устройство подстав: у них стенки, стенки между наугольными пластинками;
This is how the stands were made: They had side panels attached to uprights.
This was the construction of the stands: they had panels, and the panels were set in the frames,
This was the design of the stands: they had borders, even borders between the frames,
They were constructed with side panels braced with crossbars.
And the work of the bases was on this manner: they had borders, and the borders were between the ledges:
And this was the design of the carts: They had panels, and the panels were between frames;
And the work of the bases was this: they had panels, and the panels were between the fillets.