Lennox serial number breakdown

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  • 109A_5
    109A_5 Posts: 4,761
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    https://tech.lennoxintl.com/C03e7o14l/VIu12Ch2uV/us_hs6-261-650_6910.pdf

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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