Grefilt C1750 Pool Filter Cartridge 175 sq.ft — 30-Micron Trilobal Media, Reinforced Endcaps

Grefilt C1750 is a 175 sq.ft high-capacity pool and spa filter cartridge engineered to capture fine debris while extending service life compared to standard cartridges.

If you maintain residential or light-commercial pools, the right replacement cartridge matters for water clarity, pump efficiency, and maintenance intervals. The Grefilt C1750 fits common housing types that accept Hayward-style C1750 cartridges and compatible equivalents, offering a 30-micron rating, reinforced construction, and NSF/ANSI 50-tested materials so you can swap parts confidently.

What makes this cartridge capture more dirt with less pressure?

The C1750 uses a trilobal fiber weave that increases surface contact for particles, combined with a 30-micron nominal rating to trap fine debris without choking flow. The design balances filtration efficiency and hydraulic performance to reduce frequent backwashing or chemical load from contaminants.

• Precision 30-micron filtration for fine particle retention
• Upgraded trilobal fibers with 40% more branches for higher surface area
• Uniform media distribution prevents localized clogging
• Maintains steady flow to limit pump strain

How durable is the Grefilt C1750 under regular pool conditions?

This cartridge is built to last with heavier filtration fabric and reinforced endcaps that resist deformation and media loss. An integrated support core and robust ABS end fittings improve structural strength under pressure, reducing the chance of collapse or premature failure.

• 5 oz heavy-duty trilobal filtration fabric for increased wear resistance
• High-strength ABS top and bottom end caps for long-term durability
• Internal support core to preserve pleat spacing and shape
• Estimated up to 30% longer service life versus standard cartridges

Will this fit my existing filter housing and models?

The C1750 is dimensioned for broad compatibility with many Hayward-style housings and popular cross-reference models. Always confirm your current cartridge’s length and diameters before ordering to ensure a correct match.

• Length: 28 3/16" (overall)
• Outside diameter: 8 15/16"; top and bottom opening: 4"
• Compatible references: Hayward C1750 / CX1750RE; replaces Pleatco PA175, Unicel C-8417, Filbur FC-1294, Sta-Rite PXC175
• Sold as an aftermarket replacement; verify dimensions against your installed cartridge

Is the material safe for family pools and spas?

The Grefilt C1750 was manufactured and tested to safety standards relevant to pool and spa applications. Components that contact water meet NSF/ANSI 50 criteria to reduce the risk of harmful leachates while filtering contaminants.

• NSF/ANSI 50-tested materials suitable for pool and spa use
• Non-toxic heavy-duty fabric and molded ABS end caps
• Designed to maintain water quality without contributing contaminants
• Use and maintenance follow standard pool sanitation practices

Who is this for: The Grefilt C1750 is aimed at pool owners, service technicians, and facility managers who need a reliable, long-life replacement for Hayward-style 175 sq.ft cartridges. It’s a good choice when you want improved capture efficiency, extended intervals between cleanings, and an NSF-tested material profile—provided you confirm dimensional compatibility with your filter housing before purchase.