Loop-Loc Ultra-Loc III Solid Safety Cover w/ Drains - 16'6 x 32'6 Grecian w/ 4' x 8' Center End Step hp21404t-hp21004t-hp21254t-hp31154t The mineral cartridge lasts 4

The mineral cartridge lasts 4 months or whenever you drain your hot tub

Manufacturer Part # 520265

Manufacturer Part # 542-3067B

Volts: 115 Amps: 14

Manufacturer Part # HCXP6008A More Info Components: Impeller 751-60Hz

Loop-Loc Ultra-Loc III Solid Safety Cover w/ Drains - 16'6 x 32'6 Grecian w/ 4' x 8' Center End Step hp21404t-hp21004t-hp21254t-hp31154t The mineral cartridge lasts 4Exclusively From LOOP LOC: The Ultra Loc III Solid Safety Cover Is Tougher than Tough, Stronger than Strong! You no longer have to choose between the light weight of a mesh pool cover and the light blocking benefits of a solid cover. The revolutionary Ultra Loc III gives you the best of both worlds! Premium coated vinyl material with enhanced 100% polyester Rip Stop Scrim. Requires no pumping, scrubbing or heavy maintenance like solid waterbag covers.