My name is Stephen E. Lasko and I have been involved with air components and systems in one form or another since 1978. I have roughly ten years in residential, commercial and industrial HVAC, four years paying my dues as a drafter - both hand drafting and on the computer, about a year as a designer using Computervision 4X and AutoCAD, two years designing equipment and preparing submittals for commercial & industrial rooftop heating & cooling units and about 12 years in low pressure conveying systems. I know air fairly well.