Pentair Pentek PP30-BB Big Blue Sediment Water Filter, 10-Inch, Whole House Pleated Polypropylene Replacement Cartridge, 10" x 4.5", 30 Micron. Pentair Pentek PP30-BB Big Blue Sediment Water Filter fits ALL 10" Big Blue heavy duty housing and can replace any 10" x 4.5" sediment filter cartridge. It keeps your water clean and protects your appliances by removing dirt, sand, silt and particles. Pentair Pentek PP30-BB has a DURABLE PLEATED POLYPROPYLENE MEDIA that delivers higher flow rates and dirt holding capacity, while maintaining extremely low pressure drop. This product has a 30-MICRON FILTRATION which is highly effective at reducing medium/fine particles in a variety of residential, commercial and industrial applications. Pentair Pentek PP30-BB Big Blue Sediment Water Filter has an EXCELLENT PERFORMANCE with well or municipal water sources.