Tier1 20 Micron 10 x 2.5 Water Filter | Pleated Cellulose Whole House Sediment Filter Cartridge | Replacement for Pentek S1, GE FXWPC, 155001-43 | 2.5 x 10 Home Water Filter (25-Pack)

Q. What is this filter used for? A. This whole house sediment water filter is designed to reduce larger particulate matter such as sand, rust flakes, dirt, and visible debris before water enters household plumbing systems. Q. What does 20 micron filtration do best? A. A 20 micron rating targets coarse sediment and visible particles. It is commonly used as a first-stage sediment filter where maintaining strong household water flow while reducing heavier debris is the priority. Q. How does pleated cellulose filtration work? A. Pleated cellulose uses surface filtration, capturing particles on the outer pleated media. The increased surface area helps distribute sediment evenly across the cartridge while supporting steady flow in municipal and moderate sediment conditions. Q. Is this compatible with large-diameter housings? A. Yes. The 20 inch x 4.5 inch water filter is designed to fit most standard large-diameter whole house filter housings that accept 4.5 inch by 20 inch cartridges. Q. Where is this filter typically installed? A. This filter is commonly installed as a first-stage or entry-point sediment filter on the main water line to help reduce coarse sediment before water flows to downstream filtration components. Q. How often should this filter be replaced? A. Replacement timing varies by water conditions and sediment load. Many households monitor flow or pressure changes to determine when cartridge replacement is needed to maintain consistent system performance. Q. Will a 20 micron filter affect water pressure? A. A 20 micron filter is designed to allow strong water flow. Noticeable pressure changes typically occur only as sediment accumulates and indicate the cartridge may need replacement. Q. Is pleated cellulose washable or reusable? A. No. Pleated cellulose filters are designed for single-use surface filtration and should be replaced when flow reduction or visible sediment loading occurs.

• COMPATIBLE REPLACEMENT MODELS – This 20 micron 20 x 4.5 pleated cellulose sediment water filter is a replacement for Pentair S1-20BB, 155305-43, W20CLHD20, 155305, FF20BBPS-20, ECP1-20BB, 255493-43, and 4PAY4, and fits most standard 20 inch x 4.5 inch whole house filter housings.
• 20 MICRON SURFACE SEDIMENT FILTRATION – Pleated cellulose media captures larger sediment such as sand, rust flakes, dirt, and visible particulate matter on the surface of the cartridge, helping maintain strong household water flow in moderate sediment conditions.
• PLEATED CELLULOSE MEDIA DESIGN – Surface filtration with increased pleated area distributes sediment evenly across the cartridge face, supporting steady flow performance in municipal and treated water systems with visible sediment.
• SERVICE LIFE VARIES BY WATER CONDITIONS – Replacement frequency depends on sediment levels and water quality; because 20 micron surface-filtration media captures larger particles, monitoring flow or pressure changes helps determine when cartridge replacement is needed to maintain consistent system performance.
• COARSE SEDIMENT PROTECTION FOR WHOLE HOUSE SYSTEMS – Commonly used as a first-stage or entry-point sediment filter to help reduce larger particulate matter and protect plumbing fixtures, appliances, and downstream filtration components from sediment buildup.