Item #71301 - AGST  This storage tank comes in two sizes. The 35 Ton AGST is approximately 324mm (L) X 145mm (H). The 35 Ton Storage tank is sold as a single item.  The 4.3 Ton AGST is approximately 167mm (L) 77mm (H).  The 4.3 Ton Storage tank is sold as a pack of two.