Twilight & Legend Outer Filter with Orange Receptacle

Original Equipment Master Spas Filter Cartridge.
The Twilight & Legend Outer Filter with Orange Receptacle is used on all Master Spas Twilight Series and Michael Phelps Legend Series Spas from 2017 to current, with the exception of the triangle shaped TS240.It is also used on the Therapool SE and Therapool D swim spas from 2017 to 2024. 
This outer filter has an orange Eco Pur Charge receptacle on the top of the filter, and is embossed with Master Spas PMA-R1 / X268546
It is used in conjunction with the Eco Pur Charge Filter X268532
Replacement parts from the manufacturer guarantee an exact fit and match, and are the best quality replacements available.

Master Spas is currently doing a rolling change with OEM Filters.  You may receive the blue filter (pictured) until inventory is depleted, or you may receive the new Master Clear Filter which will be grey in color.  Rest assured, they are both the same filter, and they are both OEM, and supplied directly from Master Spas.