This document discusses doors and windows made of aluminum. It provides details on different types of doors including exterior, interior, materials used for construction, and factors for selection like fire resistance and cost. It also describes door frames, panel doors, and swinging direction. For metal doors, it notes the most common materials used and grades available. The document also discusses door operation types, weather stripping, hardware including locks and hinges, and special doors like revolving doors. Finally, it covers window terms, materials, types, and basic locking hardware options.