Work done in an attic in the neighborhood of Sant Gervasi in Barcelona. Was to fabricate and install a aluminum shutters in white lacquer finish in 3 piece type balconies, which were mobile foil was folded opening in book form. The great advantage of this type of exterior doors is they do not need any maintenance, rather than periodic greasing their fittings, not to sanding, staining or painting, as if we should do with wooden shutters. In this case we chose folding opening them in book form in order to rid the upper cornice of the facade, which with conventional external opening would not have been possible. These pieces also incorporated movable blades to play with natural light without opening the doors, with only a small gesture, darken or illuminate the room, plus the exterior isolate temperature and noise, creating an air space between the inner door and the Mallorcan. There are different forms and models to choose from shutters, as the slide, which run parallel to the front arch opening unoccupied. This work lasted a whole day 3 workers since had to remove the old wooden shutters. The joints were sealed with silicone outer neutral white Olive, which offers maintenance qualities of elasticity and higher than average. Consult models and quality without compromise, as well as price and availability, we will attend without obligation.