Glass doors are mainly panels of glass set into wood, steel, or aluminum frames. These are always used either at the back or side of the house to let natural light come through.

Below are the average costs for each type of sliding glass door frame material. Vinyl: $300-$1,200. Vinyl is affordable, low maintenance and durable in most climates.

This smart front door can go from clear to opaque with a voice command. The Feather River smart glass door starts at $800 and works with The Home Depot’s Hubspace smart home platform.

Although you can find aluminum- and steel-frame options at home improvement centers, all custom fabricated doors are steel-based. Experts say steel is the way to go, especially for a security door.