Amazon.com : SEWANTA Type VI Spa and Hot Tub Filter Cartridge [Set of 6] Replacement Filters for Inflatable Hot Tub Models. Hot Tub and Spa Filter for a Sparkling Spa Experience. :
Filter Cartridge, with Microban®, Fits Bullfrog Spas 2013 -2016 - Bullfrog Spas Official Parts & Accessories Store