Williams Door Company, Inc was founded in September of 1971, We are proud to be Knoxville's only 4th generation family owned garage door business. Williams Door Co began in a small garage, but with strong work ethics, perseverance and enthusiasm has evolved into one of the largest overhead garage door dealers in the southeast. Providing a complete line of Clopay residential garage doors, LiftMaster residential door openers, Clopay commercial sectional overhead doors, Asta rolling sheet and mini warehouse doors, Cookson rolling service doors, LiftMaster commercial door opening devices and a wide variety of accessories and parts, Williams Door Company is the best choice for your garage needs.