The granite block measures 30 x 20 x 4 inch. Mounted on a heavy-duty aluminum frame with 1 shelf. The whole system stands roughly 32 inches high. the height of each leg can be adjusted to conform to the floor's non-flatness. The granite top has several taped holes + 1 large and 1 smaller thru hole for routing cables (see photo), the hole inserts are removable. I can sell just the granite top if you want.