Mat-A-Dor Entrance/antifatigue Mat, Rubber, 36 X 72, Black Keeps building and office free from dirt and debris. 2,700 shoe-cleaning rubber fingertips per square foot. Beveled edges keep mat flat and reduce tripping hazard. Easy-to-clean design saves you time and energy. For outdoor and foyer use. Traps heavy dirt, grit and grime with stiff bristles.