Doing some metal framing on an interior tenant build out and as usual i have a number of different studs, track - 3 5/8 metal studs, 6" metal studs, standard track, deep leg track, difereng gauges, hat channel, etc. etc. For the purpose of EPDs and HPDs does each different size, gauge stud, channel, track count as a separate product? How far can i go in claiming separate products for these different metal framing components? Appreciate any advise - thanks,