In the rugged world of commercial construction, the schedule is king. But in a city like Joliet, Illinois, where the winds sweep across the plains and temperatures can plummet without warning, the weather often tries to dethrone the timeline. Inside the unfinished corridors of a new development in Joliet, the battle against the elements is being fought—and won—by a simple, roaring blue machine: the Sure Flame direct-fired heater.

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