Aboveground Doughboy Winter Skimmer Plug - 5-5/8 x 7-13/16 Inches reagent-size_Tab Strip These versatile saddle units can

These versatile saddle units can be used in either temporary or permanent installations on all types of pipe with IPS (Iron Pipe Size)

semi-automatic

direct and reliable readings of Free Chlorine concentration in water

Made of stainless steel

Aboveground Doughboy Winter Skimmer Plug - 5-5/8 x 7-13/16 Inches reagent-size_Tab Strip These versatile saddle units canThe 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