FLANGED EDGE FOR EASY INSTALLATION: These foam filled dock floats come equipped with a flanged edge that eliminates the standardized slots found in most floats, creating flexibility and speed when installed on docks, piers, or other structures. These durable dock floats from Eagle Floats are engineered to withstand harsh marine environments. The flanged top edge makes install fast and easy, with mounting possible at any point on the top of the float. Made from extra thick .150" virgin polyethylene, the one-piece rotational molding process eliminates seams that could leak or separate over time. UV inhibitors help protect the tough plastic shell from sun damage. Within the shell is a precision cut expanded polystyrene foam core that provides buoyancy without adding undue weight. Together, these materials form a waterproof and weatherproof float that is both sturdy and long-lasting. For easy installation, the flat top surface features molded-in mounting slots to securely attach to any dock framework. Eagle Floats will build floating dock systems that will keep docks and piers afloat through many seasons of use.