Anytime you see someone demonstrating the strength of van shelving, you see them stand on a shelf and bounce up and down. But, more of the stress that kills shelving units is lateral caused by acceleration, stopping fast, sharp right and left turns. Quality shelving, installed right can outlast two or three vans. There are many places to find value and economy. A single, long, more expensive, well-engineered, high quality shelf, can cost less than two short economy shelves.