Thanks for the info. A couple of Amazon customers have replied to my inquiry. One said the unit was "about" 22" without wheels & feet and the other said it was 22 3/4" without wheels & feet. Looks like the dimensions listed in the specs are the out of box but unassembled dimensions.
None of the Home Depots within 50-miles of me carry the Powermates in stock. They carry Powerhouse but that equivalent unit is even bigger.
Looks like I have a decision to make. Transport it uncovered in the bed of my truck or purchase a smaller unit.
Thanks again for your time.