I have used a few different versions of self-contained storage racks with a client recently. We have been constructing them to store seasonal clothing stored in the attic. The enclosed nature of the rack provides protection from dust and critters. My client has a few different brands of the product, but by and large they are equivalent. I did notice that one product had a canvas cover, while the other had a vinyl cover. I anticipate they will provide the same level of protection, however I suspect the canvas cover will have more breathability versus the vinyl cover. Not to mention the vinyl cover smells like a new shower curtain- this may be good or bad for you.