1 Offset Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 5 Inch Lettering filter-internal-diameter_3 inches Note: the disk must be

Note: the disk must be kept flat between tests so water in the disk from the previous test doesn't migrate into the untested wells

Measures 33 inches high x 28 inches long x 15 inches deep

add one capful per 8

This is a package of five S

An orange disposable plastic pre-gunite/plaster insert keeps debris out and retains sump shape during construction

1 Offset Ceramic Smooth Tile Depth Marker 6 Inch x 6 Inch with 5 Inch Lettering filter-internal-diameter_3 inches Note: the disk must beThis ceramic pool depth marker is printed with 1 Offset and has a smooth surface. It's overall size is 6 Inch x 6 Inch and has a letter height of 5 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