The gratings in this series are rated heavy duty when supported on all four sides.
Other special sizes quoted on request in the event none of the standards shown in this series meet your requirements. In ordering replacement grates to be used on existing catch basins, be sure to specify the exact size of opening in which the grate will be used.
Many of the grates in this series can be adapted to trench frames with support on two sizes. Most are qualified as heavy duty when the short dimension spans the trench.
Advise loading requirements so we can assist you with your choice.
