Maple sports flooring laboratory sports test certification and EN14904 certification 21 mm thick, 55-85 mm wide, finished with random length and tongue and groove dimensions. There is a groove on the side of the board to lock your fingers, and a groove at the bottom to let air pass through. After a special paint treatment, it can prevent termites and is waterproof. Teak is the hardest wood and is the recommended wood for badminton jackets. All major matches are played on teak/maple floors.