Darlly Cartridge [105 sq ft, 2-1/2" OD Bottom x 9-5/16" dia] (91053) filterparts and this Maytronics Dolphin Orion

and this Maytronics Dolphin Orion light blue version uses the 9980244 reference

and this Darlly Filtration cartridge is designed for compatible applications using the 70505 reference

The 052871F is a practical service solution when a compatible Raypak heater needs a deliming kit to support proper maintenance work

Waterway spa skim filter escutcheon

Darlly Cartridge [105 sq ft, 2-1/2" OD Bottom x 9-5/16" dia] (91053) filterparts and this Maytronics Dolphin OrionThe Darlly 91053 filter cartridge is designed for compatible filtration applications and offers 105 square feet of filtration area with a 2 1 2 inch bottom opening and 9 5 16 inch diameter. A cartridge like this is useful because it restores filter performance while preserving the original body diameter and lower end fitment used by the housing. Even when every measurement is not listed in the title, the known size details still matter for replacement