Aboveground Doughboy Winter Skimmer Plug - 5-5/8 x 7-13/16 Inches reagent-size_Tab Strip and is designed to warn

and is designed to warn patrons that children under age 8 are not allowed to swim if the lifeguard is not present

If you have one of the two-button S

direct and reliable readings of Free Chlorine concentration in water

3 Inch Insert x Insert

Aboveground Doughboy Winter Skimmer Plug - 5-5/8 x 7-13/16 Inches reagent-size_Tab Strip and is designed to warnThe Doughboy Aboveground Winter Skimmer Plug securely fits into your skimmer opening using an exclusive Rovaseal thermo insulated layer, ensuring a water tight seal. Just press the Skimmer Plug flush all the way in against your existing skimmer faceplate. No tools are required and you don't need to drain your pool! Made of ABS plastic, the durable outer plate creates a 100% air tight seal preventing freezing during the winter months. This material is