GROUP F504) This industry group includes establishments primarily engaged in the wholesale distribution of photographic equipment and supplies (SIC 5043); office equipment (SIC 5044); computers and computer peripheral equipment and software (SIC 5045); commercial equipment, not elsewhere classified (SIC 5046); medical, dental, and hospital equipment and supplies (SIC 5047); ophthalmic goods (SIC 5048); and professional equipment and supplies, not elsewhere classified (SIC 5049).