The Pentek WP25BB20P is a pleated polyester sediment filter with a 25-micron rating. This nominal micron rating allows it to capture sand, silt, rust, scale particles, and other sediment from your whole house water supply while still maintaining strong flow rates, making it ideal for well water or municipal water sources with moderate to heavy sediment loads.

The Pentek WP25BB20P measures 20" in length with a 4.5" outer diameter (Big Blue size) and a 1-1/16" inner diameter. It is designed to fit standard 20" Big Blue whole house filter housings, including Pentek's Big Blue series and other compatible 20" x 4.5" systems. Always verify your housing size before ordering to ensure proper fitment.

The Pentek WP25BB20P typically lasts 6 to 12 months depending on your water quality, sediment load, and household usage. For homes with heavy sediment or well water, expect replacement closer to every 3–6 months. A key advantage of the WP25BB20P is that its pleated polyester construction can be rinsed and reused several times before final replacement, extending its service life and value.

Yes, the WP25BB20P is one of the few sediment filters designed to be washable and reusable. To clean it, remove the cartridge from the housing, rinse it thoroughly with clean water (working the pleats gently to dislodge trapped debris), and reinstall. This reusability makes the WP25BB20P a cost-effective choice compared to single-use spun or melt-blown sediment filters.

The Pentek WP25BB20P is engineered specifically for sediment reduction. It removes dirt, sand, silt, rust flakes, scale particles, and suspended solids 25 microns and larger. Note that it does not remove chlorine, taste, odor, lead, or chemical contaminants — for those, pair it with a carbon-based whole house filter as a second stage. Using the WP25BB20P as a pre-filter also helps protect downstream filters, softeners, and appliances from sediment damage.