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			I agree w/ the 2x6's for rafters and at min. 2x8 for your ledge.A hint about your tin....check around at the gauge and 2ft vs 3ft. You'll be surprised at the differences in price. You might be better off going to a lumberyard for your tin, but make sure they have enough to do your project.
 There is a difference in manufacturin processes too!!
 Some companies you might see are Diverisifed, Orange Steel, or McElroy. They are all reputable companies with decent products.
 
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