Pentair Pentek EP-BB Big Blue Carbon Water Filter, 10-Inch, Crack on top - see image

• GREATER CHLORINE TASTE AND ODOR REDUCTION - 5 micron bonded powdered activated carbon block delivers enhanced chlorine reduction over competitive 10 micron carbon blocks, with 22,000-gallon capacity • HIGH POROSITY DESIGN - Engineered to maximize carbon utilization by allowing full adsorption before plugging, maintaining low pressure drop throughout the cartridge life • NSF CERTIFIED - Tested and certified by NSF International for material requirements. Constructed with polypropylene endcaps and a polyolefin bilaminate pre-filter wrap • FITS ALL 10-INCH BIG BLUE HOUSINGS - Drop-in replacement for any 10" x 4.5" Big Blue or heavy duty carbon filter cartridge in whole house and point-of-entry systems • 22,000 GALLON CAPACITY - Replace every 6 months or when you notice a drop in water pressure or water quality. Operating temperature range: 40-180 degrees F