PS: The slab comes shrunk wrapped in a plastic bag, to control humidity.  Inside the bag is a product cut sheet and some general instructions.  TAKE NOTE: the instructions say you need to seal all sides of the slab within 48 hours of unsealing the shrink wrap.  We weren't prepared for that and had a bit of a fire drill to make it happen.  Just an FYI before you rip it open in a fit of excitement !!!