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4.5" x 20" Filter Housings for Whole House Applications

  • US Water Big Blue Commercial Filter Housing 4.5 x 20 | H-4520

    The US Water Big Blue Housing is a commercial-grade high-quality, rugged filter housing built to withstand severe conditions. It's exclusive thread design provides superior sealing and greater security against leaks. The replacement filters are compatable with any 4.5" x 20" filter cartridge on the market.

    Regular Price: $133.00
    Sale Price: $79.95
  • US Water Big Clear Commercial Filter Housing 4.5 x 20 | H-4520-C

    The US Water Big Clear Housing is a commercial-grade high-quality, rugged filter housing built to withstand severe conditions. It's exclusive thread design provides superior sealing and greater security against leaks. The replacement filters are compatable with any 4.5" x 20" filter cartridge on the market.

    Regular Price: $200.00
    Sale Price: $119.95
  • US Water Big Blue Dual Filtration System 4.5 X 20 | BBF2-20
    This 2-Stage filtration system is designed to filter the water supply for a whole house or other pre-filtration application for business or industry
    Regular Price: $383.00
    Sale Price: $229.95
  • US Water Big Blue Commercial Triple Filtration System 4.5 X 20 | BBF3-20

    This 3-Stage filtration system is designed to filter the water supply for a whole house or other pre-filtration application for business or industry

    Regular Price: $483.00
    Sale Price: $289.95
  • US Water Big Blue Floor Mount Triple Filtration System 4.5 X 20 | BBF3-20-FM

    This 3-Stage filtration system is designed to filter the water supply for a whole house or other pre-filtration application for business or industry. Floor-mount securely support the weight of the system.

    Regular Price: $783.00
    Sale Price: $469.95

US Water also offers a full line of commercial-grade 4.5” x 20” filter housings. 4.5” x 20” filter housings are generally for point-of-entry applications. This is the ideal filter you should put on a most average size houses. Systems are available in a number of configurations, including single, dual and triple applications. Inlet sizes available are 3/4”, 1” and 1-1/2”. US Water 4-1/2” x 20” filter housings are equal to or better than Ametek, Pentek, Liquqtek, Hydronix, American Plumber, Culligan and any other 4-1/2” x 20” filter housing.

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Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.

You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.