wow that's impressive.... I'm so jealous and upset I'm going to take my 60k worth of Snap on tools and leave...…(for all the older members on here) lol
I bought that about 35 yrs. ago when I had a small auto restoration business. It's a Wurth rack. I stocked their hardware initially but not for long.
I built a similar bin rack later that worked well and was actually more flexible. It was simple to make and I could customize it to suit a particular space ... and it was cheap! The bins are available from various sources but the rack itself was made of 1"x3" pine with drop ceiling "L" stock screwed to it. It's very strong and you can fit it to any space.