The campus now has a centralized resource that includes an inventory of all classrooms, located here: classrooms.ucsb.edu.
You can use the search option or the spreadsheet on the Inventory Page to identify General Assignment classrooms and included room features. (Please note that when selecting room features in Astra Schedule, not all features included on the Classroom Website are listed in Astra and some features have been combined.)
The Inventory Page also lists building codes and translations.