New Unimogs can be purchased in either of three series. Medium series 405, also known as the UGN ("Geräteträger" or equipment carrier), is available in the U300-U500 model. The heavy series 437, also known as the UHN ("Hochgeländegängig" or highly mobile cross country), is available as the U3000-U5000 model. The U20 is the smallest Unimog. It is based on a shortened U300 frame and has a cab over the engine compartment from the Brazilian Accelo light truck (Caminhões Leves) series.