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Fits All Standard RO System
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Highly Effective Coconut Shell Activated Carbon

Man and woman sitting together in a kitchen, smiling with their new VIVA21 ro system
5th stage cartridge

Professional-Grade Polishing for Pristine Drinking Water

Enhance your home water quality with the Filter United V21RFPC10 Inline Post Carbon Filter. As the final stage in your Reverse Osmosis (RO) system, this polishing filter uses premium coconut shell activated carbon to eliminate lingering tastes, odors, and impurities. Designed with a 1/4" Quick Connect fitting, it offers a tool-free installation that is compatible with all standard 10-inch under-sink RO systems and ice makers. Experience crisp, bottled-quality water directly from your tap.

Compatible with all standard 10" under-sink RO systems. Engineered to meet strict NSF standards for peace of mind.

Performance

Eliminate lingering odors and flavors

Certified

Used in our RO system certified by WQA Gold Seal to meet the strict NSF 58 and NSF 372 standards.

Experience

Design and built in the USA. Aimed to last 12 months to protect your safe drinking water.

Care

Strive to deliver happiness to every customer. Enjoy peace of mind with lifetime support.

FAQs

How long does shipping take?

Shipping typically takes 1 business day. Then the rest is taken care by the shipping carrier of your choice.

Depending on the destination and customs processing times. You will receive a tracking number once your order has shipped so you can monitor its progress.