Robust low entry
If you don't know otherwise, the B-Open appears to be straight from the Mercedes-Benz factory: the low entry meshes seamlessly with the Sprinter. The entry step is made of a very durable plastic, so it cannot rust. It is also light (11 kg) and is built into the Sprinter. First a piece is cut out of the chassis, to make room for the B-Open. The low entry itself is robust, and because it is inside the vehicle, it is protected from the elements. Some other companies sell retractable steps that are mounted under the bus, which, along with the mechanism, are exposed to wind and weather and are vulnerable to pavements and the like. With the B-Open, you have a low entry step that will last longer than your Sprinter itself.