Genuine Pleatco PSB3.5 hot tub filter for "Spa In A Box" hot tubs. Pleatco brand filters are the best in the indusrty and made with the best materials. All Pleatco Filters feature Pleatco's FREE FLOW CORES which deliver better water flow rates and enhance filtration. This efficiency reduces wear and tear on the pump, uses less energy, and provides longer life to the Filter. Proper flow is important as many home owners switch to energy efficient multiple and variable speed pumps.
Pleatco PSB 3.5 filter replaces both the Unicel C-2305 and the Filbur FC-3120.
FREE FLOW CORES which deliver better water flow and enhanced filtration
highly efficient, spun bonded polyester filter Media
break-resistant bands keep the pleats clearly defined and evenly separated for increased water flow