Waterway 8" Round Anti Vortex Main Drain Grate Cover [VGB 2008] [Grey] (642 2157V) intermatic Application focused heaters are useful because Application focused heaters are useful because they help preserve the equipment format and operating expectations used by the supported system This version is especially useful when the installation benefits from the included union configuration rather than requiring separate connection parts The gray finish gives the drain area a more understated appearance that can work especially well in pools and spas where the surrounding surface is neither bright white nor very dark For compatible drain cover service