The present invention relates to the construction arts, in particular a modular implementation for a structural support member or header for bearing the load of large spans of a floor, wall section above a window, door or entry way. The header is modular and can be easily implemented into a variety of architectural structures. A façade can be formed which easily allows complex arches to be created such as round, horseshoe, lancet, ogee, trefoil and so on. The support member can also include an insulation which, when used with a steel beam, serves to increase the insulation value.