DrainageKits.com is proud to be carrying Polycast 600 and 700 series kits as well as two popular ductile iron grates. Hubbell makes a number of cast and ductile iron grates for their 6” wide, pre-sloped trench drain systems, Polycast 600 and 700.  The most common ductile iron gratings are the standard slotted grate (641D) and the heel-proof, […]