Builders FirstSource supplies a variety of construction and building products and services to new homebuilders. It operates millwork shops and truss, wall panel and window plants in various locations. It provides a line of prefabricated components, windows and doors, lumber and lumber sheet items and other building products. The company offers a wide selection of interior and exterior doors, as well as vinyl, aluminum and clad windows. Its other products include sheathing, gypsum, roofing, flooring, siding, concrete blocks, cabinets, countertops, hardware, fireplaces and pneumatic tools. Additionally, it offers installation services related to various staircases, insulation, kitchen cabinets and garage doors. Builders FirstSource maintains a location in Southport, N.C.