Hello Mooseman and thank you for your interest in Moen products. The Moen Yorkshire Single Post Toilet Paper Holder in Chrome is designed to be installed with the hook opening to the right. It can be installed with the hook to the left; however, the set screw hole will be exposed at the top of the base instead of hidden at the bottom. Our Product Specialists will be happy to answer any additional questions. Please feel free to call us at 1-800-289-6636; our current business hours are Monday through Friday from 9:00 am - 5:30 pm (Eastern Time).
The roll sits on the bar and does not rest on the wall. the bar does move.
The projection is 3.1 inches.
You would need to contact Home Depot to answer that question. Check the shipping details on their website.