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  1. OT700N-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 700,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT700N-A-H28
    Gal: 130 gallon
    SKU: 55958
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  2. OT800N-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 800,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT800N-A-H28
    Gal: 130 gallon
    SKU: 55960
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  3. OT900N-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 900,000 BTU/hr. Natural Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT900N-A-H28
    Gal: 130 gallon
    SKU: 55962
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  4. OT600LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 600,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT600LP-A-H28
    Gal: 130 gallon
    SKU: 55964
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  5. OT700LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 700,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT700LP-A-H28
    Gal: 130 gallon
    SKU: 55966
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  6. OT800LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 800,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT800LP-A-H28
    Gal: 130 gallon
    SKU: 55968
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  7. OT900LP-A-H28
    OptiTHERM modulating condensing high efficiency commercial water heater. Altitudes above 2,000 to 7,800 ft max. 130 Gallons. 900,000 BTU/hr. LP Gas. ASME Certified. NSF/ANSI Certified. UL Listed
    Model: OT900LP-A-H28
    Gal: 130 gallon
    SKU: 55970
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  8. ODOT200N-A
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 100 gallon • 199,000 BTU/hr • Natural Gas • ASME certified • NSF/ANSI certified
    Model: ODOT200N-A
    BTU: 199,999 (58.58)
    Gal: 100 gallon
    SKU: 55888
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  9. ODOT250N-A
    OptiTHERM Outdoor modulating, condensing high-efficiency commercial water heater • UL Listed for outdoor use in dry, warm climates • 100 gallon • 250,000 BTU/hr • Natural Gas • ASME certified • NSF/ANSI certified
    Model: ODOT250N-A
    BTU: 250,000 (73.26)
    Gal: 100 gallon
    SKU: 55886
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