Ill get accurate measurements this evening. as for shealthing, I have some 7/16s plywood and at least 30 sheets of roofing metal, which would get me dang close to the sides.Actual? or are the 3.5 x 5.5?
Either way if you rip in half they are more than a 2x4. I'd probably 'Barn frame' it with 4x6 in corners and maybe a couple in between, and rip the rest of them to finish out on 16s. What are you going to sheath it with?



















