Manufacturer: UltraTech, Manufacturer Part Number: 1124Expansion Tank (Only) for Modular IBC Spill Pallet: Connecting an Expansion Tank to a spill pallet also requires two (2) bulkhead fittings. Bulkhead fittings are included with each 2–, 3–, 4–, or 5–tank model. Once five (5) or more spill pallets are connected together, the total containment capacity is 375 gallons minimum and does not require use of an Expansion Tank to meet the spill containment regulations. A discount is available for purchases of 10 or more items. Call contractor at 317–867–2911 for details.