Greenhouse Growing

I am interested in the Juliana Premium Greenhouse and was wondering why a person would want 10mm rather than 4mm polycarbonate?

For the past few years, 6mm polycarbonate was the strongest poly that was incorporated into greenhouses. Now, Juliana in an effort to continue to provide the best products in their field is providing an upgrade to 10mm poly in their "Premium" model. This increase adds even more strength & durability to an already premium greenhouse.