The most fragile tile belongs to the first class.

Ceramic tiles

Ceramic (tile) tiles — a variant of the popular flooring in the hallway. The tile managed to prove itself for use in places subject to various loads. As a cover for floors in the hallway, the tiles are selected depending on wear resistance (graded according to class). The most fragile tile belongs to the first class. The most durable — to the V class, it is successfully applied in places of the most intensive load, even at stations. As a flooring in the hallway of your apartment, tiles of the III or IV class are quite suitable.