There are many custom door, window and millwork companies that can produce something like this. These are very high quality and you may wish to check with some local contractors on vendors or craftsmen in your area that could build to your specifications.

Wilt Built Woodworks is here on houzz. We are a small family shop. We build only custom ,exterior, interior and have done a few sets of pocket doors over the last 10 years. Contact us thru our house site or go to www.wiltbuiltwoodworks.com. We would be glad to serve you. Thanks George Wilt