The local glass companies in your area should be able to provide you with a glass enclosure like this. It will help you get a price over the phone or via email if you have dimensions. They will come measure your jobsite before doing the job, but giving them dimensions will enable them to give you a price, and for you to compare pricing with other sources.
Carolyn Albert-Kincl, ASID

I'm sure it was custom built.

This screen was fabricated based on our design by Paige Glass in San Francisco.