#5820 Polaris Unibridge Pool Vac Drain Cover WhiteThe Unibridge fits over most raised suction outlet covers creating a surface for pool cleaners to travel over without obstruction.Polaris 5825 Unibridge Smooth Main Drain Surface Gray will fit over most raised anti-vortex main drain covers to create a surface for pool cleaners to travel over without obstruction. This replacement cover also allows for flow to the drain while maintaining the smooth, flat surface. Features •Simple to assemble •Available in three colors: white, gray and bluehttps://www.polarispool.com/en/products/parts-and-accessories/unibridge