By Heather Burlingame, Senior Production Editor | September 28, 2010

Allmand Bros.The company's line of indirect oil-fired portable heaters provides heated air that is free of moisture and contaminants, the company says. Three models in the line operate on 120 volts and range in capacity from 320,000 to 505,000 Btu. An industrial-grade power burner runs on a ¼-hp motor, and the heaters deliver between 2,500 to 3,100 cfm at discharge temperatures between 200F and 220F.

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