New Whale Seaward S1100 (S-1100) horizontal marine water heater for use on boats. Tank size is 11 US gallons. Actual product dimensions are 16? High (including length of hold down brackets).Thermostat regulates electric heating element temperature at 140 degrees F. Are on the rear of the tank, opposite the drain, inlet, outlet, and other fittings. Cold water supply and hot water outlet are 1/2? Inner tank is made from Alcoa Alclad aluminum. Exterior is Marine Galvanized Steel. Hold-down brackets are securely welded to inner tank. See model spec sheet in product photos for more details on this and other Seaward/Whale water heaters. To see other model waters heaters, go here. Items heading outside the USA cannot be used for military or government applications. Items cannot be marked as gift or have a lowered value on the documentation. It is unlawful to forge international documents. Describe the nature of the problem and its urgency (include pictures if possible). You will be taken care of as quickly as possible and there will never be any additional cost to you. Be sure to enter an accurate reason and description for the return. Please read the information above thoroughly before asking a question. The item "Whale Seaward S1100 Marine Boat Water Heater 11 Gal Heat Exchange/120V Steel" is in sale since Tuesday, August 11, 2015. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Plumbing & Ventilation". The seller is "fredwarner1" and is located in Everett, Washington. This item can be shipped worldwide.