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Download specific enclosure submittals, enclosure specifications, enclosure drawings, enclosure pricing and enclosure assembly instructions in pdf format. You can get the enclosure drawings in dwg format by calling us at 800-245-6333. Our slab mounted, solid aluminum HCH heaters are independently certified to operate in "wet/damp" locations as required by ASSE Standard 1060. Our heaters are sized to keep the inside of the enclosure hot enough to avoid freezing when the outside temperature is minus 30 degrees F.