GOLDEN ICEPURE Whole House Big Blue Activated Carbon Water Filter Compatible with Pentair Pentek CBC Series, EP Series, EPM Series, CCBC & CEP Series The filter is NSF42 certified. Big Blue Activated Carbon Water Filter 10 Natural coconut shell activated carbon Removing Chlorine, color, odor,THMs and provide better taste size is 10 x4.5.The weight is 3.6pounds