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20 X 4.5 Carbon Block With KDF55 Replacement Filter by Tier1 (20 micron)

Price $185.99 List Price Price $265.99 Save 30%
Availability: BackOrder - Free Shipping
Available Add-Ons

SKU: TIER1-OR-LUBRICANT-LG › See more product details

Dow Corning Molykote 111 O-Ring Silicone Lubricant (5.3 oz. Tube)

Add: $39.99 $27.99

SKU: TIER1-OR-100 › See more product details

American Plumber, Culligan, Pentek OR-100 O-Ring for Big Blue Housings

Add: $9.99 $6.99
The Aries AF-20-2015-BB Comparable KDF and Carbon Water Filter by Tier1 is 20 inches by 4.5 inches. The filter can be used in all number 20 Big Blue or number 20 Big Boy housings. Filter cartridge contains 4 pounds of KDF-55 along with coconut shell granular activated carbon to reduce chlorine taste and odor, water-soluble heavy metals, and controls scale, bacteria, and algae in your water. KDF is a patented medium that consists of high purity copper-zinc granules that use redox (exchange of electrons) to effectively reduce chlorine and heavy metals as well as controlling microorganisms in potable water. This filter restricts water flow significantly and, if used as a whole house filter, may require installation in a parallel configuration rather than a series configuration to improve the flow rate. Order today!
Package Qty1
Used In BrandsPentek, Tier1, Watts
Manufacturer's IdKDF55-20BB
Advertised Size (in)20 x 4-1/2
Actual Size (in)20 1/8 inches (length) x 4 2/5 inches (outside diameter)
Actual Size (cm)51.12 x 11.1
Outside Diameter (inches)4.40
MediaKDF 55 with Granular Activated Carbon
Primary Filter MediaGranular Activated Carbon
Filter Life (months)6 months
Micron Rating (Nominal)10
Flow Rate (gpm)4
Flow Rate (lpm)15
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product

Reduced Contaminants

The TIER1-KDF55-20BB reduces the following contaminants:

  • Algae
  • Bacteria
  • Bad Taste and Odor
  • Chlorine Taste & Odor
  • Hard Scale
  • Heavy Metals
  • Sediment

The TIER1-KDF55-20BB is comparable with the following part numbers


The TIER1-KDF55-20BB fits the following model numbers