Nelsen Dirt Cart, 20 1mic Pltd, Bb

Built for whole-house duty, the Nelsen NPF-BB-20-1 is a 20" Big Blue pleated sediment cartridge rated at a fine 1 micron, manufactured by United Filters International. Its large 4.5" x 20" format and high-surface-area pleated design make it ideal for point-of-entry systems that need fine particle removal at the higher flow rates a whole home demands.

Big Blue Capacity Meets Fine Filtration

The Big Blue cartridge format is the recognized standard for whole-house filtration, prized for its large media volume and ability to handle household flow without excessive pressure loss. The NPF-BB-20-1 brings true 1-micron fine filtration to that generous body. Reusable non-woven polyester media is pleated to maximize dirt-holding capacity, which extends the time between changeouts even as it captures fine sediment, silt, and rust from all the water entering your home, protecting every fixture and appliance downstream.

• 1-micron rating for fine whole-house sediment removal
• Large 4.5" x 20" Big Blue housing format
• Pleated, reusable non-woven polyester media
• Suited to potable water and light-industrial use
• Effective for well water, pool, and spa applications
• Chemical and bacterial resistance for versatility

The durable polyester fabric resists chemical and bacterial attack, making this cartridge a flexible choice across potable, well-water, pool, and spa duties where conditions can be demanding. Because it can be rinsed and reused rather than thrown away after a single cycle, the NPF-BB-20-1 offers a genuinely economical path to fine point-of-entry filtration over the long run, an advantage that adds up in homes with heavy sediment loads. Installed as a whole-house pre-filter, it shields downstream softeners, carbon systems, and reverse osmosis equipment from particulate while keeping your water clear room to room. For homeowners who want fine, whole-house filtration with reusable value, the Nelsen NPF-BB-20-1 is a dependable, high-capacity solution.

The 20-inch Big Blue body delivers both higher dirt-holding capacity and the lower pressure drop that whole-house flow demands, which means fewer cartridge changes and steadier water pressure throughout the home even at fine 1-micron filtration. For households on well water with heavy seasonal sediment, the reusable polyester media is especially economical, since a periodic rinse can restore much of its capacity. Versatile across potable, well, pool, and spa duties and built to United Filters International standards, the Nelsen NPF-BB-20-1 is a dependable, cost-effective choice for serious whole-house particle control.