I agree that it won't be thermally efficient, but here is a source for glass garage doors: www.glassgaragedoors.com -janet H O B B S ' I N K Janet L. Hobbs, AIBD 1200 Lakeway Drive, Suite 4 Lakeway, TX 78734 Phone: 512-261-6226 Fax: 512 261 0007 Web: www.hobbsink.com e-mail: janethobbs at hobbsink.com