Grab your "B" code flag magnet from Fridgedoor.
This magnet can either signal the letter "B" or "I am discharging, taking in, or carrying dangerous goods."
Each magnet has a full magnetic back that with stick to any magnetic surface. Code flag magnet measures 2.5" x 2.5".
These magnets are designed for interior use only. We also offer code flags for the car. Click here for code flag magnets for use on the car.