supply of writing / notice / display boards, low dust chalk, duster and acrylic writing desk , 2.2 type ( b ) notice board, size: 600x900 mm / 600x1200 mm / 900x1200 mm / 1200x1500 mm / 1200x1800 mm / 1200x2400 mm / any other size required by the department. , 2.3 type ( c ) notice board, size: 600x900 mm / 600x1200 mm / 900x1200 mm / 1200x1500 mm / 1200x1800 mm / 1200x2400 mm / any other size required by the department. , 3.1 display & charting board, size: 600x900 mm / 600x1200 mm / 900x1200 mm / 1200x1500 mm / any other size required by the department. , 3.2 portable display system set of 3 notice boards with 4 poles 600x900 mm , 5.1 type ( a ) stand for writing / notice board made of 3 legs 1800 mm height , 5.1 type ( a ) stand for writing / notice board made of 4 legs 1800 mm height , 5.2 type ( b ) stand pole for portable display system , 6.1 type ( a ) duster with magnet , 6.2 type ( b ) duster without magnet , 7. acrylic writing desk.