Your TowHaul model number represents quite a bit of information: the style of machine, the payload, load space and width.
Example: RGS/LPM 250-48-22
RGS – Removable Gooseneck, Single Axle
LPM – Low-profile Modular
250 – Lowboy payload in short tons
48 – Load space of the Lowboy
22 – Width of the Lowboy