Just the packaging. Westbrass is now offering this item to their customers in either a retail clamshell package that can hang up on the wall (R) or boxed packaging for shelf storage (D). Same product inside though
Silicone tub and tile caulking sealant is what should be used. Plumbers putty is harmful to the product and product finish
When in doubt, please hire a plumber to install all trims which hold water. If you wish to do it yourself, then we would refer you to the countless Youtube videos, or the do it yourself books found in most hardware stores.