Aries (AF-20-3690-BB) 20"x4.5" Big Blue Activated Alumina Filter 20 inch x 2.5 inch Filters Ideal for sediment-carbon combinations

Ideal for sediment-carbon combinations

ensuring it seats properly on the center tube

Spun fibers progress from coarse outer layers to fine inner layers

Chemistry Patented free chlorine indicator

Aries (AF-20-3690-BB) 20"x4.5" Big Blue Activated Alumina Filter 20 inch x 2.5 inch Filters Ideal for sediment-carbon combinationsAries Filter Works Aries AF 20 3690 BB 20"x4. 5" Big Blue Activated Alumina Filter Professional fluoride and arsenic reduction for whole house applications Fluoride reduction Arsenic removal 20" Big Blue housing compatible High capacity media The Aries AF 20 3690 BB uses high grade activated alumina media to reduce fluoride, arsenic (V), selenium, and other contaminants from municipal and well water supplies. Designed for 20"x4. 5" Big Blue housings,