Continuity mistake: When the TV star is killed he is wearing a white t-shirt with black lettering. As he is dragged to and placed in the trunk of the car it is still visible. When the CSIs move him from the trunk onto the gurney, there is no lettering on the t-shirt.
Continuity mistake: When Eric is at the rehab center where the TV star was being treated, the camera zooms in from above. Seconds after his chat with the girl to whom the star had confessed murder, the camera zooms back out, but this time, the juices are rearranged, there are new white flowers by the tree on the right, the table is pulled back from the chair, the chairs are no longer right close together, there is a suspended piece of equipment above the table, and there is some funky doodad leaning up against the table that wasn't there before. The sun moved by at least a couple hours during their 30 second chat.
Answer: Yes, sizes of jails differ.