A: Wesco, this is stickered and stapled
A: Yes, but it would be less than ideal because it won't really absorb any kind of stain or finish and would be ugly otherwise. Additionally, my experience was that they warped over time to the extreme. The product would have been unusable to me except that I cut it into smaller pieces to make stakes such that the wrping didn't matter that much.
A: On smaller products such as this, the product drying after treatment can yield something smaller.
A: It is still wet and can bow. It is treated with MCA. These tend to sit in some store for awhile so you may find them partially air-dried.