[1] Certified for use in water treatment plant or distribution systems with inlet sizes of
    greater than one inch diameter and where flow exceeds 3 gallons/minute.
    
    M  designates the Micron Rating. 
    HF designates non-cellulose media.
[2] Certified for use in treatment plants or distribution systems with inlet sizes of
    greater than one inch diameter and where flow rate exceeds four gallons per minute.
    Big-Blue is a registered trademark of Plymouth Products, Inc. 
    
    Trade names may contain the following designations: 
    M  - micron rating 
    L  - length of cartridge 
    HT - high temperature cartridges 
    HF – non-cellulose media 
    W  - optional shrink wrapping
[3] Big-Blue is a registered trademark of Plymouth Products, Inc.

[4] Certified for Harmsco® HIF Up-Flow Filter models: HIF-42, HIF-75, HIF-100, HIF-150-FL
    and HIF-200-FL.  Certified for use in a water treatment facility or distribution systems
    with inlet sizes of greater than one-inch diameter and where flow exceeds 3
    gallons/minute.
[5] Approved Harmsco® Hurricane™ Filter Housings are HUR-40-HP, HUR-90-HP and HUR-170-HP. 
    Approved Harmsco® HIF Up-Flow Filters are HIF-7, HIF-14, HIF-16, HIF-21 and HIF-24. 
    Approved Harmsco® Waterbetter™ Filters are WB40SC-2, WB90SC-2 and WB170SC-2.  Evaluated
    for use in a water treatment facility or distribution systems with inlet sizes of
    greater than one-inch diameter and where flow exceeds 3 gallons/minute.  Trade names
    refer to the housing only. Approved filter elements include HC/170-M or EZ-CLEAN by
    Harmsco, or other NSF/ANSI Standard 61 Certified cartridges meeting the size and minimum
    flow requirements.
[6] Certification is for use in a water treament facility or distribution system with inlet
    sizes greater than 1" diameter and with a minimum flow of 3 gallons/minute (16,000
    liters/day).
    Trade names refer to the housing only. Approved filter elements include HC/170-M or
    EZ-CLEAN by Harmsco, or other NSF/ANSI Standard 61 Certified cartridges meeting the size
    and minimum flow requirements. These housings are not intended for use with cartridges
    above the Listed water contact temperature.
[G] Product complies with NSF/ANSI 61 Annex G, NSF/ANSI 372 and conforms with lead content
    requirements for “lead free” plumbing as defined by California, Vermont, Maryland, and
    Louisiana state laws and the U.S. Safe Drinking Water Act due to take effect January
    2014.