For residential and commercial concrete pools, Hayward square drain covers are available in a wide range of sizes and flow designs to satisfy any installation requirement. Whether the application demands frames and covers for new construction or replacement cover assemblies for existing installations, Hayward suction outlets set the standard for quality and value. Haywards Low Velocity suction outlets are specifically designed for applications with requirements limiting the maximum flow velocity to 1.5 feet per second. In addition, Haywards High Flow covers have some of the industrys highest ASME approved flow rates. Each size and flow design cover retrofit to existing Hayward frames and are designed for an extensive 7 year life span. All Hayward WG Series suction outlets and replacement covers are VGB compliant and are tested to ASME A112 19.8b-2009 and ANSI/APSP-16 standards as well as meeting CPSC requirements. Installation of anything other than the recommended Hayward drain cover on a Hayward frame or Hayward sump may not be ASME A112 19.8b-2009 and ANSI/APSP-16 compliant. Likewise, the installation of a Hayward drain cover on a non-Hayward frame may not be compliant.