Gable Cake Transport Boxes......

I just saw the corrugated cardboard gable shaped boxes for tiered cakes at a local sams club or costco and would love to use a similar setup for my business. has anybody seen, used, or purchased a tiered cake from sams or costco or have the ability to help find out who is manufacturing this box? it is a very large square gable style box but all side able to drop flat.