The work: Substituting while the sheet metal duct fabricator is on vacation. The apprentice: Allen Charles Edwards (ACE) — first-year mechanic. The technician: N. Arthur Thomas Egan (NATE) — 15-year ...
This article originally appeared in the Spiral Duct Manufacturers Association insert in the January 2017 issue of SNIPS magazine. There are several factors that a designer should consider when ...
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