Buy surplus Portable Structures from Gold Mountain, Bastone, Ramark Park Models Ltd, 20 Ft Mobile Office, Adam Kubiak, AllStar and more. Buy with confidence with our IronClad Assurance®. ... Gold Mountain S203012R300gsm PE Storage Canopy (Unused) Maryland (2,342 mi away) Online Auction. US 600. Sep 15. Watching. Add to Watch List.