Two new wagon rakes have recently been added to the Lowery Towers layout, and they represent two very different prototypes. Both sets of models are based on superb 3D-printed bodyshells and details, produced for me by Simon BR Blue.
The JNA bogie box open is, in many ways, as basic a wagon as you can get. Built to carry aggregates and unloaded with a clam shell mechanical grab, the wagon design originates from the MBA Megabox and is built on a single central spine.
Even these lowly wagons have detail differences, as can be seen between these two examples, so beware which one you are going to model. The GBRf version has small doors in the sides and the handbrake wheels mounted on the bogies, while the Wascosa/