Hello Remodelingsucks and thank you for your interest in Moen products. The Moen Donner Recessed Toilet Paper Holder and Clamp in Chrome has a depth of approximately 1.875 inches. For pre-purchase, installation, and warranty assistance, please feel free to call us at 800-289-6636. Our current business hours are Monday through Friday from 8:00 am - 7:00 pm (Eastern Time).