The heat exchanger used for Quick "Nautic Boiler B3" is AISI 316L stainless steel. The heat exchange capacity is notably higher than that achieved from other manufactures. The tank is made of 1.5 mm gauge AISI 316 stainless steel welded with Argon shielding gas and hence highly resistant to corrosive agents. The electrical heating element is made of Incoloy. The thermal insulation is high density polyurethane foam injected between the cover and tank giving excellent heat retention properties Tank mounting brackets or wall or floor-mounted are stainless steel AISI 316 and are supplied as standard in each package.