
Courtroom set
Riverfront Stages are a production company based in Atwater Village, Los Angeles, that provide studio space and practical sets for filming. The entirety of 24: Solitary was filmed in their prison set, and they were thanked in the episode's credits.
The courtroom scene of "Day 8: 9:00am-10:00am" was also shot at Riverfront Stages, in their "modern courtroom" set.