Hayward high flow square drain cover with inner frame. Installation in concrete, residential and commercial pools. Hayward drain cover can be used as a single replacement cover when installed on the same suction line as an EcoStar SVRS or a Stratum SVRS. NSF listed. Certified to ASME A112. 19b-2009, ANSI/APSP-16 and CPSC requirements. Retrofits to all Hayward existing frames. Comes with 1-year limited warranty. Measures 12-inch length by 12-inch width. Available in white color.