Pentair Tank Bottom F72

The Pentair Tank Bottom F72 (part number 176203) is a heavy-duty lower vessel containment chassis engineered exclusively for the FullFloXF™ F72 high-efficiency fiberglass Diatomaceous Earth (D.E.) pool and spa filtration system. This commercial-grade lower basin is molded from premium, glass-reinforced engineering polymers and acts as the sole load-bearing foundation for the complete filter assembly, safely supporting a massive internal vertical grid nest heavily saturated with 7.2 pounds of dense D.E. filter powder and high-volume water. Featuring pre-formed connection pathways that integrate with high-flow 2.5-inch to 3-inch plumbing bulkhead kits, the tank bottom directs incoming water along an optimized hydraulic path to minimize back-pressure and boost operational efficiency by up to 25%. Its design includes a specialized lower drain plug channel for complete winterization, chemical flushes, or routine media replacement, while its heavy upper rim forms an absolute watertight compression boundary when sealed against the matching upper lid via a high-tension clamp assembly. Capable of safely sustaining continuous system operating parameters up to 50 PSI, this rugged bottom matrix completely resists structural flexing, material softening, and chemical degradation from direct exposure to UV radiation and intense sanitizers like chlorine, bromine, or muriatic acid scale washes. Due to its thick-gauge, wide-diameter fiberglass-composite construction and integrated bulkhead channels, this individual replacement tank bottom carries a net product and shipping weight of approximately 44.80 pounds.