8 Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering filter-width_16 1/4 inches it protects the free chlorine

it protects the free chlorine from being destroyed by the sun ultraviolet rays

Choose installation fitting to mount the sensor (one that meets your needs)

To raise the pH

This lid is round and 9-1/4 inches in diameter

5 and is printed with 4 Inch letters and has an overall size of 8 Inch x 6 Inch

8 Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering filter-width_16 1/4 inches it protects the free chlorineThis ceramic pool depth marker is printed with 8 and has a smooth surface. It's overall size is 6 Inch x 6 Inch and has a letter height of 4 Inches This ceramic pool tile is printed with ceramic glaze inks, then kiln fired to ensure the finest, most durable depth and safety marker line available. The smooth surface tiles are for waterline applications. Ceramic depth markers are essential for commercial pools for improved safety, legal compliance, and