![FST](https://cdn.shopify.com/s/files/1/0703/6811/files/FST990_Configurator_GRY_480x480.png?v=1662470960)
FST Series Trailers
single bulk fuel tank.
![MTT](https://cdn.shopify.com/s/files/1/0703/6811/files/mtt690_gy_s__10__wheels-nosparetire-floor_480x480.png?v=1662471335)
Multi-Tank Trailers
These trailers have hatch-style doors on the front enclosure and multiple
115-gallon fuel tanks.
![ADT](https://cdn.shopify.com/s/files/1/0703/6811/files/Find_Your_Model-ADT_480x480.png?v=1662471935)
ADT Trailers
The doors on the front enclosure open to the side.
![EV](https://cdn.shopify.com/s/files/1/0703/6811/files/ev750_gy_s__7__new_rails_480x480.png?v=1662471783)
Economy Trailers
These trailers do not have a front enclosure. Model numbers begin with "EV" or "AG".