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Bowman Heat Exchanger 20kw (68,000 BTU) Cupro Nickel Tube Code : EC80-5113-1C
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Bowman Heat Exchanger 70kw (240,000 BTU) Cupro Nickel Tube Code : EC120-5113-3C
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Bowman Heat Exchanger 100kw (340,000 BTU) Cupro Nickel Tube Code : FC100-5114-2C