Our truck is a CR unit with a 16-foot box (16' 2'' interior length to be exact). FedEx requires 12 feet of usable space for C units. We tell them we have 14 feet of usable space. That can be achieved by loading all of our freight handling equipment into the front two feet of space.
If we had an odd-size load, like say four skids that are 48" square, we could load them front to rear down the middle (16 feet) by moving our gear to the sides. All heavy gear and furniture pads are on wheels so they can be repositioned and resecured in minutes. Because it is a reefer truck and the walls are insulated with four inches of foam, eight inches of interior space goes to insulation. While a dry box truck can haul 48" x 48" skids side by side, our truck cannot.
Three rows of 44" x 48" skids can be loaded side-to-side without moving any of the equipment shown in the photo. As a practical matter, we view our truck as a six-skid truck. With decking and repositioning the equipment, we could carry more, but have never had to. Most of our loads have been four skids or less.
Regarding the hanging dollies, I presume Greg means the four-wheel furniture dollies that are shown hanging high on the wall. New Haven Moving Equipment has a product called Rubber Band Holders. We have four in the truck. Two are used to hang dollies. One is used to hang bungee cords, a tape measure, mesh rag bags and misc. stuff. The fourth is used to hang mover's rubber bands. These are great devices; very sturdy, easily repositioned.
New Haven Moving Equipment has stores in several cities. The product can also be ordered online or by telephone.
See:
http://newhaven-usa.com/moving7.shtml#rbh_1
and
http://newhaven-usa.com/index.shtml
New Haven Moving Equipment also has a great catalog that they will send free of charge.
I should add that not all dollies will fit on a rubber band holder. We use New Haven's Dual Rail H Dolly with four inch wheels. It fits nicely over the hooks of the rubber band holder. These dollies are easier to work with than many we have used in other trucks.
See:
http://newhaven-usa.com/moving3.shtml#275_35