... both side surface:flat,gritted,figured 1)Name:safety drainage gutter cover for workplace 2)Surface:flat surface,gritted surface, ... slipping.4)Material:thoroughly wetted continuous glass strand fibers and a special resin that provides maximum corrosion resistance to chemicals. ... non-magnetic,non-conductive,non-sparking,light weight,easy to install,easy to maintain.6)Usage:walkway grating,floor grating, ...