Our PRO 200FC trench drains come with removable D and E load class ductile cast iron gratings and rebar installation brackets to simplify the installation process. This system is fitted with a 1% internal slope built in. Channels are made of fiber concrete which has the ability to withstand extreme hot and cold temperatures, and a galvanized stamped steel edge is attached for the cast iron bolt-down mechanism and for weight reinforcement. This system comes classified as either a D or E load class which means it can withstand loads up to and including 89,920 LBS and 134,800 LBS per foot respectively. End caps and concrete rebar installation brackets are purchased separately.