Direct Replacement for Premium Filtration Performance These genuine NO BS filter cartridges seamlessly integrate with your existing shower filter system. Engineered with the same KDF-55 media and Vitamin C complex as the original unit, they maintain consistent water refinement for skin-friendly bathing. Optimized Media Composition KDF-55 Layer: Supports reduction of water impurities through redox reactions. Mineral Blends: Calcium sulfite and zeolite spheres help balance water properties. Vitamin C Infusion: Contributes to neutralizing residual substances in water. Key Advantages Extended Service Life: Each cartridge supports up to 6 months of regular use (approx. 12,000 gallons). Corrosion-Resistant Housing: Chrome-plated casing resists hard water damage. Plug-and-Play Installation: No tools required – insert cartridges in seconds. Compatibility Note Designed exclusively for NO BS Heavy Duty Shower Filter models (Check your main unit’s specifications before purchase).