Pentair Sign No Diving Allowed, 12" x 18" | R231200 Sanitizer System Parts This unique fast-dissolving granular formulation

This unique fast-dissolving granular formulation adjusts and locks in the proper pH level of spa water

Note from Unicel: For use on 1-1/2" male SAE stand pipe

The C-4301 is compatible with Nordic Hot Tubs models manufactured before July 1999 only

Thickness: 1 inch

Works for both Above Ground and InGround pools

Pentair Sign No Diving Allowed, 12" x 18" | R231200 Sanitizer System Parts This unique fast-dissolving granular formulationThese commercial quality pool and spa signs are constructed of weather resistant, high impact plastic and finished with brass grommets for easy, secure hanging Features and Benefits: Commercial quality pool and spa signs are constructed of weather resistant, high impact plastic and finished with brass grommets for easy, secure hanging Sign is 12" x 18" Satisfies required posting laws for public pools regarding "No Diving".