Pentair 100 SqFt Clean & Clear Tank Lid

The Pentair 100 SqFt Clean & Clear Tank Lid is a high-strength upper containment structural component engineered exclusively for vertical, single-element pool and spa cartridge filtration systems. Depending on the specific variant of your 100-square-foot filter model line, this original equipment manufacturer (OEM) replacement lid is designated by one of two distinct part numbers:

• Part Number 178553 (Standard Clean & Clear / Predator Series): Molded in Pentair's signature architectural almond color, this injection-molded tank lid features a height of approximately 13.5 inches and a circular profile designed explicitly for classic 50 and 100 square foot single-cartridge setups.

• Part Number 178548Z (Clean & Clear® RP Series): Specifically tailored for the high-efficiency, low-friction "Reduced Pressure" (RP) vertical filter design, this variant accommodates the narrow-body, high-velocity configuration of the 100-square-foot RP model line.

Injection-molded from a dense, heavy-walled fiberglass-reinforced polypropylene thermoplastic composite, the top dome of the lid features integrated threaded molded entry bosses at its highest point. These receiving ports are engineered to house a standard 1/4-inch NPT mechanical high-visibility pressure gauge and a Pentair High-Flow™ manual air relief valve assembly. The primary operational role of this lid is to enclose the filtration chamber, creating a secure space above the vertical core of the single-element cartridge.

When the matching lower tank basin is joined to this lid using a high-density elastomeric body O-ring (part number 87300400Z) and secured by a heavy-duty single-action thermoplastic locking ring or continuous clamp band assembly, it creates an absolute watertight compression boundary. This heavy reinforcement ensures that the lightweight composite shell can safely withstand severe internal operating parameters up to 50 PSI and absorb high-velocity pump startup surges without bowing or fracturing. Engineered for maximum UV stabilization to combat continuous sun fading on exposed equipment pads, its robust polymer matrix resists environmental stress-cracking, shifting seasonal ambient temperature differentials, and advanced chemical corrosion from direct exposure to sanitizers like chlorine, bromine, and routine cartridge scale washes. This individual replacement tank lid carries a net product and shipping weight of approximately 5.00 to 5.50 pounds.