Building Materials and Construction Components Design 5.1 Switches and Sockets Collection by Font Barcelona 5.1 is a collection of electrical switches and sockets designed for architectural interiors. The collection is defined by pure lines, a plate thickness of 6 mm and a minimal ergonomic toggle. Plates are made of stainless steel, brass, aluminium or Corian. A wide range of functions is offered, including switches, sockets, push buttons, dimmers, thermostats and USB chargers. The plates fit universal boxes and can be mounted horizontally or vertically. Each piece can be adapted in material, finish and format to suit a specific project.