Wind and Water Tight Container Containers classified as “wind and water tight” are guaranteed to be free of holes that would allow outside forces to affect the contents of the unit. While these units are not as aesthetically appealing as one trip or refurbished storage containers, their classification as “wind and water tight” guarantees the security of the items stored inside. Buying or leasing a “wind and water tight” container is a smart way to save money while also obtaining a fully-functioning storage container.