Dodge is claiming that the ProMaster is capable of an impressive 5,145lb cargo capacity and a towing rating of 5,100lbs when properly equipped.And the roof itself is capable of carry a load up to 400LBs. Looking at the structure of the ProMaster although its just bare bones thin steel Dodge has really made a difference in reinforcing the structure to properly support the load. these are some great numbers to work with. If I didnt know any better I would day you can't put any load on the roof.
The means the weight capacity for both passengers and cargo. In this case the Ram ProMaster has a maximum 5,145 pound payload capacity which is very reasonable for a commercial cargo van. As for the "Step in Height" its the height of the rear cargo door from the bed to the ceiling of the cargo area. The Dodge ProMaster has a step-in height of 21 inches if you don't know already.
the step in height on the Promaster is one of the main reasons why I am so interested. Despite the negativity with guys who are more trust worthy or use to rear wheel drives the space freed up is huge. My roller bin would fit in perfectly with that measurement and being lower to the ground.