Pentair Pentek CBC-20BB Big Blue Carbon Block Water Filter, 0.5 Micron | Bonded Activated Carbon Block, Ultra-Fine 0.5 Micron; 20 x 4.5 in; 150,000-Gallon Capacity; Fits 20-Inch Big Blue Housings

PREMIUM TASTE AND ODOR REDUCTION - Reduces chlorine taste and odor along with fine sediment for cleaner, great-tasting water at every tap in the home, from a single 20-inch whole-house cartridge.

ULTRA-FINE 0.5 MICRON - The bonded powdered activated carbon block is rated at a nominal 0.5 micron, capturing very fine sediment and particulate while reducing taste and odor, with enhanced dirt-holding capacity.

TESTED AND CERTIFIED - The CBC-20BB is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements; polypropylene end caps and a Santoprene gasket handle water up to 180°F.

FITS 20-INCH BIG BLUE HOUSINGS - Measures 20" x 4.5" and fits all 20-inch Pentair Pentek Big Blue and other heavy-duty housings; a drop-in replacement that also makes an excellent polishing filter or pre-filter.

150,000-GALLON CAPACITY - This high-capacity block delivers up to 150,000 gallons of filtration; replace about every 12 months, or sooner when you notice a drop in water pressure or a return of taste and odor.