The document describes the technical specifications of an evacuated glass tube manifold solar water heater. It uses a selective coating with aluminum nitride and aluminum applied via magnetron sputtering technology. The collector design consists of three concentric borosilicate glass tubes that are 1800mm long and have a 1.6mm thick glass wall. The manifold is made of stainless steel or galvanized iron and insulated with 50mm of polyurethane foam.