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Water Doctor

Water Doctor 4.5 x 20 Replacement Filter Cartridges – PP / PS /PL/CTO/ GAC

$29.99 CAD
SKU: PP-20B05M-1
Complete your 4.5” x 20” Water Doctor system with the right filter for your needs.This collection of high-performance 4.5” x 20” filter cartridges is specifically designed for Water Doctor WF-20B,...

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Model: PP 4.5 x 20
Water Doctor 4.5 x 20 Replacement Filter Cartridges – PP / PS /PL/CTO/ GAC
$29.99 CAD
PP 4.5 x 20

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Estimated delivery: Jun 21 - Jun 25
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Complete your 4.5” x 20” Water Doctor system with the right filter for your needs.
This collection of high-performance 4.5” x 20” filter cartridges is specifically designed for Water Doctor WF-20B, WF-20BC, WF-20B2, and WF-20B3 housings. Whether you’re targeting sediment, chlorine, or taste & odor — we have the perfect filter for your system.

Available Filter Types:

  • PP Sediment Filter (Polypropylene)
    ➤ Captures sand, silt, rust, and dirt
    ➤ Perfect for whole house or pre-filtration setups
    ➤ Recommended Replacement: Every 6 months
  • PS Spun Sediment Filter
    ➤ Graded density for depth filtration
    ➤ High dirt-holding capacity
    ➤ Recommended Replacement: Every 6 months
  • PL Pleated Sediment Filter
    ➤ Washable & reusable
    ➤ Higher flow and surface area
    ➤ Recommended Replacement: Every 6–12 months
  • CTO Carbon Block Filter
    ➤ Removes chlorine, VOCs, and improves taste & odor
    ➤ Dense structure for effective chemical removal
    ➤ Recommended Replacement: Every 6–12 months
  • GAC Granular Activated Carbon Filter
    ➤ Great for high-flow filtration
    ➤ Removes chlorine, organic chemicals, and odors
    ➤ Recommended Replacement: Every 6–12 months

Compatible Systems:

  • Water Doctor WF-20B

  • Water Doctor WF-20BC

  • Water Doctor WF-20B2

  • Water Doctor WF-20B3

  • All standard 4.5” x 20” Big Blue-style housings

All filters are made from premium food-grade materials, safe for use in home or commercial filtration setups.
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