Material:Stainless steel1.Only 6.5mm thickness from floor after installation. Compared with similar products,it is not easy to stumble much more;2.When using,open the cover horizontally to the floor to avoid accident potential and product damage caused by cover erection;3.To choose open type to open the cover,to avoid the hidden danger caused by accidental open;4.Brand new frame of function accessories,easy to change.Product Feature1.Only 6.5mm thickness from floor after installation. Compared with similar products,it is not easy to stumble much more;2.When using,open the cover horizontally to the floor to avoid accident potential and product damage caused by cover erection;3.To choose open type to open the cover,to avoid the hidden danger caused by accidental open;4.Brand new frame of function accessories,easy to change.