Culligan D-20A Under Sink Drinking Water Filter Cartridge Ladders & Scaffolding Heavy-duty brass hex nuts are

Heavy-duty brass hex nuts are easy to grip and nickel plated for durability

Oxygenated formula

Ideal for low demand appliances such as dryers

Each knife in the family shares the character of a trusted old pocketknife with the sure function of one freshly opened out of the box

Culligan D-20A Under Sink Drinking Water Filter Cartridge Ladders & Scaffolding Heavy-duty brass hex nuts areD20 replacement filter cartridge reduces chlorine, bad taste, and odor. Granular activated carbon construction, high surface areas for maximum absorption. Filter life up to 12 months or 1000 gallon. Use with model No. US 600, US 550, and CTR 210 filters.