The Pentair Pentek P Series Cartridges are manufactured from pure 100% polypropylene fibers. The fibers have been carefully spun together to form a true gradient density from outer to inner surfaces.
P Series Cartridges are designed for purity; they will not impart taste, odor, or color to the liquid being filtered when used within the recommended temperature limit. Additionally, the polypropylene construction provides superior chemical resistance and is not prone to bacterial attack.
The coreless strength of the cartridges is achieved by sintering the many fibers into a solid matrix.
Features:

• Manufactured from pure 100% polypropylene
• Spun fibers form a true gradient density from outer to inner surfaces
• Nominal 1 micron rating