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Notes:
Backboard shall be of any rigid weather-resistant material. The front surface shall be flat and painted white unless it is transparent. If the backboard is transparent, it shall be marked with a 3″ wide white line around the border and an 18″ x 24″ target area. If the backboard is transparent, it shall be marked with a 3″ wide white line around the border and an 18″ x 24″ target area bounded with a 2″ wide white line. |
Fan shaped and rectangular backboards
(U.S. Department of the Army, Office of the Chief of Engineers)