Sterling Water Treatment CRS Series Reverse Osmosis Filter Replacement for CRS-3 - ROCRS-B

Refresh Water Quality with Sterling ROCRS-B CRS-Series RO Filter Pack for CRS-3 Systems

Keep your CRS-3 reverse osmosis system tasting great and running smoothly. The Sterling ROCRS-B pack replaces the standard pre/post filters on CRS-3 under-sink RO units, restoring flow, protecting the RO membrane, and polishing flavor at the faucet. Filters are sized for the CRS-3 manifold and swap quickly during routine service. (RO membrane is replaced separately.)

• Brand: Sterling Water Treatment
• MPN: ROCRS-B
• Type: OEM replacement filter pack for CRS-Series RO (CRS-3)
• Size/Capacity: For CRS-3 systems with a 50 GPD-class TFC membrane (membrane not included)
• Material/Finish: Sediment media and carbon elements; inline post-carbon polisher (system-specific)
• Performance: Restores staged filtration to help maintain TDS reduction, flow, and taste; protects the membrane from particulate and chlorine
• Connections/Fit: Direct-fit elements for CRS-3 housings/manifold; quick-connect tubing on inline post-carbon (layout-dependent)
• Dimensions: 10″ cartridge format and CRS-series inline post-carbon (see system manual)
• Included: Sediment pre-filter, carbon pre-filter (block or GAC per CRS-3 build), and inline post-carbon; RO membrane not included
• Certifications/Compliance: For use on potable water; follow CRS-3 operating limits
• Warranty: Consumable replacement parts—see Sterling terms

Restore Taste, Odor & Flow

Fresh pre/post filters reduce sediment, chlorine, and organics before and after the RO membrane, helping water taste clean and keeping everyday flow at the faucet consistent.

Protect The RO Membrane

New sediment and carbon stages shield the thin-film membrane from particulate and oxidants, supporting steady production and longer membrane life between changes.

OEM Fit, No Guesswork

ROCRS-B is matched to CRS-3 systems for a direct, tool-light service—no adapters, no trial-and-error on sizes or fittings.

Simple Annual Service

Most homes replace these filters about once per year (water quality and usage dependent). Always depressurize, sanitize housings, and flush per the CRS-3 manual after installation.