Unbranded Main Water Filter Replacement

The A. O. Smith Main Faucet Under Sink Replacement Filter reduces 99% of 9-harmful contaminants - lead, chlorine, atrazine, lindane and turbidity. Certified by IAPMO to NSF/ANSI standards 42, 53 and 401. Replace every 1,389 gal. or 6-months.

• Compatible with A. O. Smith main faucet filter
• Reduces 99% of 9 harmful contaminants for safe drinking water
• Lasts up to 1,389 gal. or 6 months