We have a large collection of stamps for production of prefabricated wall bases in reinforced polyester with fiberglass as elements of coupling for smoke and heat extractors and lighting elements. The smoke and heat extractor (EFC) is a security opening that has now become an integral part of active fire protection systems. It is mounted on the roof through our wall bases and, in case of fire, places in direct communication the surrounding environments with the outdoors allowing the free venting of smoke and heat. Our elements allow simple placement and complete hermetic sealing and adaptability to any roof panel thanks to the profiles in progress that copy the section geometry, either galvanized or wavy, flat or curved, in addition to the lightweight structure. Wall bases in glass resin are resistant to atmospheric agents thanks to the exterior treatment in gelcoat and may be requested with simple or insulated walls for better thermal insulation.