Pool Season Phosphate Control - 1 Quart chlorine-type_Tablets This is a Zodiac 9-100-9006

This is a Zodiac 9-100-9006 Black Pressure Relief Assembly for Polaris Vac-Sweep 180/280/360 Pool Cleaners

The height of the collar is 3-1/8 inches

Smith Steel Meter Stand Hand Rail for the 12 foot board

This Warning No Swimming Allowed With Graphic aluminum sign measures 12 x 18 inches

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

Pool Season Phosphate Control - 1 Quart chlorine-type_Tablets This is a Zodiac 9-100-9006For a higher phosphate level treatment, use Pool Season's Phosphate Control which comes in a one quart bottle. Phosphate removal is crucial for the performance of salt chlorine generators. It is also great for water maintenance.