I think that they probably lasts much longer that ten years, but they had to pro-rate it to ten. Each shelter is going to be set up in a different climate creating a different life expectancy of the shelter.
I don't think that they are meant to be a living shelter, only meant as a temporary shelter or storage. would be great to use in haiti or japan where a quick shelter could be used very efficiently.
2005 Silverado 2500hd Duramax
1972 Toyota FJ40
1967 Porsche 912(100% stock)