Pentek - C1-20BB - 20" x 4.5" Carbon Impregnated Cellulose 5 Micron Filter refrigerator filter Twist the old carbon pre-filter

Twist the old carbon pre-filter counterclockwise to remove it from the manifold

25 GPM matches typical residential RO production rates and small commercial equipment output

🔧 For maximum filter life and performance

including commercial and residential systems

Mesh 30 533 micron (

Pentek - C1-20BB - 20" x 4.5" Carbon Impregnated Cellulose 5 Micron Filter refrigerator filter Twist the old carbon pre-filterThe Pentek C1 20BB combines carbon impregnated cellulose filtration with sediment removal in a single 20" x 4. 5" cartridge rated at 5 micron nominal. This dual purpose filter reduces chlorine taste and odor while capturing fine particulate, making it an economical choice for whole house, well water, and commercial applications. SPECIFICATIONS Pentek C1 20BB Technical Details Model Number C1 20BB Dimensions 20" x 4. 5" Micron Rating 5 micron (nominal)