Unicel 25sqft Aqua Spa/4 Season Cartridge Diameter=6in.; Length=9-3/4in.; Top=Semi-circle handle; Bottom=1-7/8 with slots
Other Items from Aqua Spa C-6601 - Aqua Spa/4 Season Cartridge, 25sqft C-4402 - Aqua Spa Cartridge, 20 sqft