Beth,
This is Dennis Woolard with App Wood Doors. These are Sapele Doors with our Ebony Finish. This is actually a winery(Silver Fork in Morganton NC), and these doors actually slide on a track. Day to day use, the door on the far right opens like a traditional door. The sliding feature comes into play if you want to slide them all the doors to one side. Ed and Jennifer at Silver Fork use this feature when they want full access for entertaining,tastings etc... The idea is that many people can walk in and out during these outings. The price here would be $8,500 to $10,800 depeniding on your overall size. My direct email is dennisw@appwooddoors.com and feel free to contact me with any additional thoughts. Thanks. DW