Canadian Professional Boxing Federation
Rings
Rings - Description
30. Rings used in all contests shall not be less than eighteen (18) feet (5.49 meters) square within the ropes nor more than twenty (20) feet (6.1 meters) square within the ropes and the floor of the ring shall extend beyond the ropes not less than eighteen (18) inches (45.72 cm.). The floor of the ring shall be padded with a one (1) inch (2.54 cm.) layer of Ensolite, or the equivalent, placed over a one (1) inch (2.54 cm.) base of building board or other suitable material. The padding shall be covered with canvass, duck or similar material tightly stretched and laced securely in place under the ring apron. Ring ropes shall be four (4) in number and not less than one (1) inch (2.54 cm.) in diameter. All ropes shall be wrapped securely in soft material. The lower rope shall be 18 inches (45.72 cm.) above the ring floor, the second rope thirty (30) inches (76.2 cm.), the third rope forty-two (42) inches (106.68 cm.) and the fourth rope fifty-four (54) inches (137.16 cm.) above the ring floor. The ropes shall be secured on all sides by two (2) ties equidistant from the corner posts so that the ropes cannot be separated farther apart than they are at the corner posts.