Single replacement for Hydropool Pleatco X18-PHY25 filter used in the Serenity series hot tubs in 2020. 2 of these filters were used to replace the large Serenity Wave Filter P/N 4520035. Your hot tub model may require the sleeve adaptors Hydropool P/N 5005045 for these filters to fit, sold separately at most Hydropool spas dealers.
Top View
Outside Diameter 6″ (152mm)
Top Closed with Handle
Side View
Filter Length 9-1/2″ (242mm)
Washable Pleats
Bottom View
Outside Diameter 6″ (152mm)
Bottom Open Hole 3-1/4″ (82mm)
Compatible replacement for:
- Pleatco X18-PHY25
- Hydropool 20
- Hydropool 4520036
