The item is 6 coils high and can be made as a compact coil approx. 180mm high or a standard coil approx. This is a basic coil without connectors. It can be used as the basis of a water heating system for a wood-fired hot tub or similar.We can make custom water heater coils in a variety of sizes with regard to overall diameter, coil pitch, height, tail length and welded-on fittings. We also make stainless steel. Stands and fire holders for the coils - please see our other listings. The item "Off grid, wood-fired outdoor water heater heat exchanger stainless steel" is in sale since Thursday, October 8, 2020. This item is in the category "Garden & Patio\Outdoor Heating, Cooking & Eating\Firewood & Charcoal". The seller is "firetreemetalworks" and is located in Larkhall. This item can be shipped to United Kingdom, Antigua and barbuda, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Bahrain, China, Israel, Hong Kong, Norway, Indonesia, Malaysia, Mexico, Singapore, South Korea, Switzerland, Taiwan, Bangladesh, Belize, Bermuda, Bolivia, Barbados, Brunei darussalam, Cayman islands, Dominica, Ecuador, Egypt, Guernsey, Gibraltar, Guadeloupe, Grenada, French guiana, Iceland, Jersey, Jordan, Cambodia, Saint kitts and nevis, Saint lucia, Liechtenstein, Sri lanka, Macao, Monaco, Maldives, Montserrat, Martinique, Nicaragua, Oman, Pakistan, Peru, Paraguay, Reunion, Turks and caicos islands, Aruba, Saudi arabia, South africa, United arab emirates, Ukraine, Bahamas, Colombia, Kuwait, Philippines, Qatar, Uruguay, Viet nam.