Sheet aluminum supplier in Billings, MT?

[RankAm]

I need to buy some sheet aluminum for sidewall and belly pan work. Does anyone have experience in buying sheet aluminum in the Billings, Montana, area? I need some 4' wide material, and I would like to buy some 5' wide material for the belly pan (but that seems hard to find).

Thanks, Hank

[HiJoeSilver]

Check the local steel supply companies. 5' wide is unusual to find, you can get belly pan material from airstream but it'll cost you with shipping. Largest sheet you'll commonly find is 4'x12', more common 4'x10'. You may be able to get them to order some rolled sheet for you, but it'll have to be softer for being rolled and unrolled. I'm using 4'x10' sheared width wise to fit between frames and cross members, overlapping at the cross members. . Other way would be to seam along the centerline. No matter what you'll end up with waste. I think mine had to be 62" to reach outside of frame to outside of frame rail. Just longer/wider than 5'.
Google steel supply billings mt, give them a call, they usually deal in aluminum as well. Recommend 5052-H32 .032" thick for the belly.
Sidewalls interior? If painting I'd recommend the same material.