http://www.rockler.com/steel-table-frame-20-in-w-x-46-in-l-x-16-in-h#turnto-reviews-content
If you can use a Tormek, you can make a top for this.
Jeff,
This looks like an interesting option for an economical, solid lower height table. Do you have one?
Are the shafts for the castors threaded?
I use an all purpose Delta work stand of similar construction. It is solid and versatile. I like the straight legs of your stand, as well as having the lower stretcher inset for foot clearance.
Ken
I do not have one and it does not come with casters. It just looked like a good price to me.