You probably have the Slow-Rise roller shades on your motor home. The company is Irvine Shade and Door Inc. I have attached their Web page link. Irvine Shade and Door
I have called them along with others for replacement brackets. They will not sell them to you but will furnish them free to you. Hope this helps?
2016 34RL CC; 2008 Ram Mega Cab 2500HD, 6.7L, 68RFE 6 speed, 4X4, Smarty S67, TDR 135K+miles