Principal Door Signs

Ammonia Principal Door Signs are placed at all entrances to machinery rooms. Our signs are specifically designed to provide a clear hazard warning for employees in food processing plants, mills, and cold storage facilities.

• Follow ANSI-IIAR standard for the identification of piping, valves, and components
• Signs come in standard 178 mm x 305 mm (7 in. x 12 in.) or 305 mm x 305 mm (12 in. x 12 in.) sizes
• Custom sizes are available

Contact us today to order products or learn more about MSC’s ammonia labeling & services.