Trusty 73837P Heat Register Without Damper - 9.7-by-2.1-Inch, Antique Pewter Available in two colors: antique brass or antique pewter Antique brass: Winnebago Industries part number 137965-01-01A Antique pewter: Winnebago Industries part number 137965-01-02A Measures 11.2" x 3.6"; includes screw holes Designed for rough opening measuring 9.7" x 2.1"