I don't quite follow, but okay.
What I've been trying to convey, rather poorly obviously, is that WT does not make or provide an acrylic dustcover. And I only keep mentioning it so other interested parties aren't confused.
Any WT dealer can furnish one by having one made, to a certain spec, just like all the customers/owners on here have done. Hence your use of "official" is incorrect. I hope that clarifies it, and we can put that one to bed.