Doors of metal, including armored doors, blast doors, bulletproof doors, soundproof doors, lead-lined doors, radio-frequency shielding doors, stainless steel doors, all the foregoing made of metal and component parts and fittings therefor; door frames of metal and component parts and fittings therefor; door knobs and handles of metal and component parts and fittings therefor; door hinges of metal and component parts and fittings therefor; door latches of metal and component parts and fittings therefor
Metal GoodsWooden doors including armored doors, blast doors, bulletproof doors, soundproof doors, lead-lined doors, and radio-frequency shielding doors, all the foregoing made of wood and component parts and fittings therefor; non-metal door frames and component parts and fittings therefor
Nonmetallic Building MaterialsInstallation, maintenance and repair of doors; providing information on installation, maintenance, and repair of doors via a website
Building Construction and RepairProduct research and development, new product design, engineering, technology supervision and inspection, and product testing, all in the field of or relating to doors
Computer and Scientific