First established as a door company in the 1940s, Dillard Door has grown into one of the most successful security system providers in Tennessee today. In our 60-plus years of experience, we have earned a reputation for integrity, reliability and ingenuity. Simply stated, we do what we promise – and do it right. Rather than selling “quick-fix” products, we help companies develop complete security solutions, installing everything from entrance gates to security cameras to complete Access Control Systems – anything you need to protect your assets and ensure total control of your facility.