Filbur FC-2718 Spa/Pool Replacement Filter Cartridge safety 5A] [Hardwire] (6320241) is engineered

5A] [Hardwire] (6320241) is engineered for air blower applications

and this G & P Tools version is designed for that service task using the 99-366-1075 reference

3 inch hole size

White replacement parts are especially practical when maintaining a consistent finished look around the skimmer opening matters

Filbur FC-2718 Spa/Pool Replacement Filter Cartridge safety 5A] [Hardwire] (6320241) is engineeredA replacement filter cartridge helps renew the filtration element inside a compatible spa or pool system, and this Filbur FC 2718 cartridge is designed for matching applications where the original cartridge no longer delivers the support it should. When a cartridge becomes worn, loaded, or less effective, the system can lose dependable filtration performance. The FC 2718 reference gives this part practical value because cartridge filters work best