Quartet Whiteboard Planner, 4-Month Planning White Board, Dry Erase Board, 23" x 35", Black Frame (05149SV) Dry-erase whiteboard surface is smooth and easy to clean; 23 x 35 inches size; 4-month calendar planner helps you plan far in advance; occasional use for small or home office Easy-to-follow mounting instructions & hardware; Comes complete with one Quartet dry-erase marker