Hydronix NSF Carbon Block Filter — 4.5" x 20" (5 Micron) CB452005

Model: B-6

Get cleaner, better-tasting water with this high-capacity Hydronix NSF-certified carbon block filter. With a large 4.5" diameter and 5-micron filtration, it’s built for performance—reducing sediment, chlorine, taste, and odors while supporting strong water flow throughout your home or system.

What It Helps With

• Reduces chlorine, unpleasant odors, and chemical taste

• Captures fine sediment, rust, sand, and particulates down to 5 microns

• Enhances clarity and improves overall water quality

Key Features

• Size: 4.5" x 20" (Big Blue Style Filter)

• Filtration Level: 5 micron

• NSF Certified: Meets NSF/ANSI standards for material safety and filtration performance

• Coconut shell carbon block for strong absorption and reliability

• Supports higher flow rates for whole-home and commercial use

Ideal Applications

✔️ Whole-house systems
✔️ Commercial and light industrial filtration
✔️ Reverse osmosis pre-filtration
✔️ Improving taste and odor in well water or city water

Replacement Frequency

Change every 6–12 months, depending on water quality, water source, and usage.

Compatibility

Fits most standard 20" Big Blue filter housings.
Not sure if this is the right fit for your system? We can help confirm before you purchase.

Part #: SMF CB452005