| DAYTON 4RK80 Replacement Element, 9" dia., 25.6" H Filter Cartridge, Compatible with Manufacturer Part Number 4RK11, Filter Micron Rating (Maximum) 5 micron, Filter Type Single-Element Cartridge, Compatible with Pump Type Pool and Spa Pumps, Compatible with Brand Dayton, Compatible with Grainger Part... ... more DAYTON 4RK80 Replacement Element, 9" dia., 25.6" H Filter Cartridge, Compatible with Manufacturer Part Number 4RK11, Filter Micron Rating (Maximum) 5 micron, Filter Type Single-Element Cartridge, Compatible with Pump Type Pool and Spa Pumps, Compatible with Brand Dayton, Compatible with Grainger Part... | | $201.99 go to store |