More information than you need, but here goes:
B & R Manufacturing
4600 Wyland Dr.
Elkhart, IN 46516
1-800-607-1538 or 574-293-5669
Their website, http://www.brmfg.com
even has instructions how to replace glass.
Here are two sets of part number information I have. However, I believe these may be 2003 & therefore obsolete. Also, I don't know if your coach has the "floppy ear" mirrors, or the eye-level mount. Use the following p/n's merely as reference:
curbside R1022 or maybe R1018
roadside R1034 or maybe R1019