The Aries AF-20-2011-BB combines 1 lb. of KDF-55 process media with granular activated carbon in a 20"x4.5" Big Blue format for whole-house heavy metal reduction and chlorine removal. This specialty filter cartridge targets mercury, iron, hydrogen sulfide, and microorganisms while eliminating taste and odor issues at the point of entry.
SPECIFICATIONS
Filter Cartridge Details
| Part Number | AF-20-2011-BB |
| Dimensions | 20" x 4.5" (Big Blue) |
| Media Type | KDF-55 & Granular Activated Carbon |
| KDF Weight | 1 lb. KDF-55 process media |
| Primary Application | Whole-house heavy metal reduction |
| Target Contaminants | Mercury, iron, hydrogen sulfide, chlorine, microorganisms |
| Housing Compatibility | Standard 20" Big Blue housings |
| Manufacturer | Aries Filter Works (OEM) |
INSTALLATION & USE
Cartridge Replacement Steps
- Shut off water supply and relieve system pressure by opening a downstream faucet
- Unscrew the Big Blue housing sump using a filter wrench and remove the old cartridge
- Clean the housing sump with mild soap and water, then rinse thoroughly
- Insert the Aries AF-20-2011-BB cartridge and reassemble the housing with a lubricated o-ring
- Turn water back on slowly, check for leaks, and flush the system for 5 minutes before use
COMPATIBILITY
Housing Requirements
The AF-20-2011-BB is designed for standard 20-inch Big Blue filter housings with 4.5-inch inner diameter. This specialty filter works in whole-house configurations where heavy metal reduction and chlorine removal are primary concerns. Ideal for well water applications with elevated iron or mercury levels, or municipal water requiring chloramine and taste-odor treatment. Replace every 6-12 months depending on water quality and household usage.
🔧 Pro Tip: KDF media performs best in warmer water and benefits from occasional backflushing. If your Big Blue housing allows, install this filter in the second or third stage position after sediment pre-filtration to extend media life and prevent fouling from particulate matter.
