Hello Kampers. Thank you so much for your interest in Moen products. The Moen Curved shower rod with pivoting flanges would be used for inconsistent or uneven wall surfaces. If you have additional questions, please complete the form at http://www.moen.com/consumer-suppoert/contact-us or call Moen at 1-800-289-6636. Our business hours are 8:00 a.m. - 7:00 p.m. Monday through Friday and 9:00 a.m. - 3:00 p.m. Saturday EST.