Eureka AV26X26 26" x 26" Eureka Anti-Entrapment Stainless Steel Drain Grate is a block free drain cover to enhance the safety main drains and sumps in swimming pools and feature gradually sloped sides and a solid top surface. These covers prevent many objects from being drawn into the line. Most importantly; they help ensure that swimmers do not become trapped below the pool's surface by the powerful suction generated by the recirculation system.