Incorporated in 1990, Capitol Building Supply , also known as CBSI, is a full-service distribution company that provides a variety of commercial and residential interior finishing products. It serves subcontractors, general contractors, facility managers, government agencies, health and educational buildings and individual homeowners. The company offers commercial ceilings, grids, wall panel systems, structural studs, fasteners and drywall accessories. In addition, Capitol Building Supply provides sealants, fiberglass insulation systems, custom column covers, doors, frames, adhesives and hardware products. It also offers pickup and delivery services. The company has more than 40 boom trucks and over 100 delivery individuals. It has locations in Virginia and Maryland. Capitol Building Supply is a part of Gypsum Management & Supply.