The CDU800 is a powerful submersible sump pump made from cast-iron, boasting a high performance 1/2 HP motor that pumps up to a whopping 4200 GPH @ 0'. Some of it's features include a vertical float switch for automatic operation, a top suction design that filters debris and prevents clogging, a 1-1/2" NPT discharge, and a float guard that protects the switch from hang-ups. Easy installation without plumbing changes and a carry handle provide convenience and portability, while a 3-year Wayne warranty gives you the assurance you've made the right decision.