The Tier1 RFC-20BB-DFS is a 5-micron radial flow granular activated carbon (GAC) cartridge. This 5-micron rating allows it to effectively reduce chlorine taste and odor, sediment, and other common contaminants while maintaining strong water flow throughout your entire home. The radial flow design ensures minimal pressure drop, making it ideal for whole house applications where high flow rates are needed.

The Tier1 RFC-20BB-DFS has a filtration life of approximately 6 months or up to 150,000 gallons, depending on your household's water usage and incoming water quality. Homes with higher chlorine levels or heavy water consumption may need to replace the cartridge sooner. Replacing it on schedule ensures consistent chlorine reduction and protects downstream plumbing and appliances from sediment buildup.

The Tier1 RFC-20BB-DFS is a 20" x 4.5" Big Blue (BB) size cartridge, engineered to fit standard 20-inch Big Blue whole house filter housings. It is compatible with Tier1 20" Big Blue housings as well as other industry-standard 20" x 4.5" whole house systems. Always verify your housing dimensions before installation to ensure a proper fit and leak-free seal.

The Tier1 RFC-20BB-DFS uses high-quality granular activated carbon (GAC) to effectively reduce chlorine taste and odor, sediment, rust, dirt, and other particulates down to 5 microns. Its radial flow design maximizes contact time between water and carbon media, delivering cleaner, better-tasting water at every tap in your home while extending cartridge life compared to axial flow designs.

The Tier1 RFC-20BB-DFS is manufactured with components tested to NSF/ANSI Standard 42 for materials safety and chlorine reduction performance. It operates within a temperature range of 40°F to 100°F and a pressure range of 20 to 90 psi, with a maximum recommended flow rate suitable for 20" Big Blue whole house systems. This makes it a reliable, cost-effective solution for point-of-entry water treatment in residential applications.