Meat racks are often custom built dependand upon what is stored on them and how much of it is stored. Can buy them but it would be custom. A
meat rack that would optimize the storage space of S-4 PARs, unless extra slots for the pipe, would not optimize that for S-4 Lekos, this much less old style 18" scoops.
Nothing wrong with the economy plumbing supplier solution if built to your needs. Simple carted
platform of plywood (pay attention to the
caster type in load
rating) with some floor flanges for Sch. 40 pipe bolted to it - say two or three rails of it, than various lengths and fittings when cross braced to store what is intended. Perhaps even a shelf above or for sway bracing economically built. Beyond that, yep it's a custom thing, our
Leko Manager constantly refines the design of such a thing and they are not cheap to have consctructed for you. Than you get into various lamp bar and
cyc light type storage units.
For the most part, can buy, can get welded for you and they will work well especially when you pre-design for the various
fixture types installed, otherwise you can
build as long as just as much design and bracing is done. Could be as simple as some Sch. 40 pipes with laterals that have tapped and braced straps between bars to keep them from bending. Keep in mind door widths and casters but not too difficult.
On the other
hand one ton of lights per cart... one would be hard pressed to make any cart that would hold 2,000#.