Outer R3 Filter works for Clarity series spas (All year Models)
And works for Healthy Living series and TS 240 Spas (2016 models & up) Hot Tubs.
Filter only works for all Clarity Series (All year Models) , Healthy Living & TS 240 Spas (2016 Models & up) that are using the Eco-Pur Mineral Cartidge.
Twilight: TS 240
Clarity Series: Precision 6/7. Balance 7, Precision 7 , Balance 8, Precision 8, Balance 9
(Clarity Series all year models use this filter)
Healthy Living Series: HL 616, HL 624, HL 628, HL 630, HL 7/HL 7.5, HL 8/ HL 8.5, HL8DL,