industrial mat cleaning zones at the entrance to the building. a black plastic-metal mat in the of an arch or half-circle li

arch architecture black brown building cellular cleaning closeup cottage dirt door doormat doorstep doorway entrance factory floor frame galvanized geometric glass grid halfcircle high industrial mall mat material mesh office outdoor plastic plasticmetal prevention protection rain rectangle residential rough rubber shape shop shopping sidewalk slip snow soft staircase stairs steel steps surface tile wall water zone zones