Unicel® C-8413 Replacement Filter Cartridge – 125 Sq Ft

Direct drop-in for Sta-Rite Posi-Clear PCX-125 & Waterway Pro Clean 125

No more guesswork—this OEM-spec cartridge gives your filter 125 sq ft of premium spun-bonded polyester media and 148 pleats to trap fine debris down to ~20 microns. It’s built tough to last through seasons of cleanings, so you can focus on cannonballs, not cartridges.

Key Features

• Large Media Area: 125 sq ft of 4-oz polyester for massive dirt-holding capacity

• 148 Pleats: Maximizes surface area for longer run times between cleanings 

• Fine Filtration: Captures particles as small as ~20 microns for crystal-clear water 

• Durable Construction: Spun-bonded polyester resists tearing and holds shape through repeated rinses

• OEM-Exact Fit: Open top & bottom end caps with 4″ ID molded gaskets ensure a perfect seal every time 

Specifications

*Dimensions & pleat count from Hayward-style OEM specs 

Maintenance & Safety Tips

1. Power Down & Relieve Pressure: Always shut off your pump and bleed off system pressure before swapping cartridges.

2. Watch Your Gauge: When filter pressure rises 8–10 psi over start-of-season levels, it’s time to replace.

3. Rinse Between Uses: A thorough garden-hose rinse after each season extends cartridge life—skip harsh chemicals.

4. Seasonal Swap: In most climates, changing once per season keeps flow optimal and energy use down.