I just took a closer look at my 33 stand with casters.
Instead of the hollow feet, it appears to have solid
steel bars, 3/4" by 3/4", for the casters.
The bars are 20" long and stick out 2-1/2 inches in
back and 11 inches in front. The casters are very
near each end of the bars.
That being said, Harbor freight has the 16' by 24"
dollies on sale for 20 simoleons instead of 30
from now until March 3rd. I may buy a couple
more.
Tm N3CRK