Sentry Garage Door and Gates Driveway Gates in Houston TX. The #1 choice for driveway gates and garage doors since 1999. Our number one goal has always been to maintain a higher standard. We have done this by providing top-quality products and the best customer service. We specialize in driveway gates for residential, multi-family, commercial, and industrial applications. With one call, you will know you are in good hands with Sentry Garage Door and Gates.