1)FRP grate sewer drain covers 2)Impact resist.Anti-slip.Service life 20 years 3)easy to be cut and assemble 4)ISO9001:2008 1)Name:FRP grate sewer drain covers 2)Usage:grate panel in car wash station,green area,drainage cover.3)Advantage:Impact Resistant,Anti-slip,Service life 20 years no need maintance.Cut into many shapes as you like. FRP grate sewer drain covers in green area