Profile: US Door & Building Components is a supplier of self-storage components, rolling steel doors, rolling slat doors and wind load certified doors. Our product line includes interior hallway systems, stackable storage & wine locker systems, mezzanine systems, relocatable building systems, and structural pier & header system. Our 501 roll-up door features polypropylene wears strips, springs as well as guides manufactured from 18 gauge hot-dipped galvanized steel. Our model 700 series roll steel slat doors feature fully enclosed 12-inch galvanized steel barrel, roll-formed 16-gauge galvanized guides and curved & flat slat profiles.