The dimensions for the A Board must be between 550mm and 700mm wide and, from the base of the board, must be between 850mm and 1200mm high.
f. Rhaid i'r dimensiynau ar gyfer Bwrdd H fod rhwng 550mm a 700mm o led ac, o waelod y bwrdd, rhwng 850mm a 1200mm o uchder.