Non-toxic, odorless, no leaching or secondary pollution. The outer layer is 10 micron to hold more dirt. Whirlpool WHKF-GD25BB / WHKF-DWHBB / WHKFDWHBB. This filter filters up to 30000 gallons, depending on the local water quality.
Premium Filtration: NSF certified to reduce fine sediment, chlorine taste and odor in residential and commercial drinking water. Safe & Reliable: These CTO carbon filters are manufactured with high purity coconut shell activated carbon and wrapped with food grade polypropylene.