Restore full filtration on Eco Water Systems whole-house water filters with this factory-replacement cartridge. Standard 10" Big Blue (4.5" diameter) form factor that drops straight into the Eco Water EPW4 housing or any compatible 10" BB filter housing. Replace on a calendar (every 3-6 months in typical residential use) or when pressure drop across the housing climbs noticeably - whichever comes first.

• 5 micron sediment filter cartridge
• Fine 5 micron rating captures fine sand, silt, rust particles, and the cyst-sized particulates that get past coarser filters - good as a standalone whole-house polish or as a second-stage filter behind a 30 micron pre-filter
• Standard 10" Big Blue (BB) form factor - approximately 4.5" outside diameter x 9.75" tall
• Fits the Eco Water EPW4 housing and any compatible 10" Big Blue filter housing
• Sold as a 2-pack - keep one in service and one on the shelf for the next change
• Replace every 3-6 months under typical residential use, sooner under high sediment or heavy chlorine load

Installation: Shut off the inlet, depressurize through a downstream fixture, then unscrew the housing sump with a strap or filter wrench. Drop the new cartridge in core-up, lubricate the housing O-ring with a thin film of food-grade silicone grease (NOT petroleum), and snug the sump until firm. Open the inlet slowly with a downstream tap cracked to bleed air; check the housing for leaks before walking away.

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