Pentair Rainbow Sign Pool Capacity 12" X 18" | R230900 Competition & Swimming Equipment This cartridge is listed as

This cartridge is listed as compatible with select Aqua Spa models

VGB anti-entrapment complete main drain has 1-1/2-inch FIP bottom plug pipe size

providing the plumbing connection point between the filter and its associated pipework

fits filters manufactured after 5-85 Pentair TR Series TR100C TR100C only

Also known as: C8420

Pentair Rainbow Sign Pool Capacity 12" X 18" | R230900 Competition & Swimming Equipment This cartridge is listed asPool Capacity sign, with place to write the capacity of your own pool (consult your local regulations for sizing advice). These commercial quality pool and spa signs are constructed of weather resistant, high impact plastic and finished with brass grommets for easy, secure hanging. Sign measures 12" x 18"