Profile: GTS Interior Supply distributes commercial and residential interior finishing products. Our interior finishing products include fasteners & adhesives, joint treatments, trims, steel products, and plaster & stucco materials. Our fasteners & adhesives include drywall nails, drywall screws, sound caulks and backing clips. Some of our acoustical products include sound isolation membranes, wood & metal ceilings, wall & corner protection systems, and access doors.