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  • HF45-20BLBK10 Big Blue 20-inch Filter Housing with pressure relief, durable polypropylene, high-flow cap, shown without filter cartridge and mounting brackets.
  • HF45-20BLBK10 Big Blue 20-inch filter housing, durable polypropylene, high flow rates.
  • HF45-20BLBK10 Big Blue 20-inch filter housing with black cap and blue body, designed for high flow rates.
  • NSF certified
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The Big Blue size 20" Filter Housing with pressure relief is an extra-wide housing that accommodates large 4.5" wide filters for increased flow. It is made of a durable, reinforced polypropylene that is usable with a variety of noncorrosive chemicals. The housing cap is a high-flow polypropylene cap with 1" external female NPT ports and large internal ports, allowing water to pass through rapidly. This 'Big Blue' size filters is an excellent choice for whole house or commercial applications where high flow rates are required. 

Please Note: This is the housing assembly only and DOES NOT include filter cartridges (# CB-45-2005) or brackets / mounting screws (# FM-25W), sold separately.

$62.99 USD
$62.99 USD
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Important Subscription Details:

◦ Optional monthly subscription with semi-annual direct replacement cartridge shipments to your home. ◦ Cancel anytime. ◦ Cancellation ends extended coverage and future cartridge deliveries. ◦ Coverage applies only while subscription is active. ◦ Cartridge replacement every 6 months is required. ◦ Not insurance and not a lease. ◦ By adding this subscription to your cart, you agree to the Extended Warranty + Scale Inhibitor Subscription Terms and Conditions.
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Important Subscription Details:

  • Optional monthly subscription. Cancel anytime.
  • Extended coverage applies only while the subscription remains active and maintenance requirements are met.
  • To maintain extended coverage, scale inhibitor cartridges must be replaced every six months using approved cartridges supplied by Salt Lake Iron & Steel Ltd. Co.
  • Billed monthly at $44.99 (or discounted rate when applicable). Price applies while subscription remains active.
  • Coverage does not automatically transfer if the home is sold.
  • Proof of maintenance may be required to receive coverage. See Terms for details.
  • Full program details, exclusions, and transfer rules are in the Terms and Conditions.