huh, wasn't it a 10man in vanlia?oh capped at 10man according to wiki... i see...
As I recall, the BRS dungeon as a whole has had 3 different caps over the duration of classic. At launch, dungeons weren't capped separately at all, so you could enter with a raid of 40.At some point after, dungeon caps were introduced and most dungeons were capped at 10 players. (U)BRS however was capped at 15. I distinctly remember running UBRS in groups maxed to the 15-player cap.At some even later point, the BRS cap was reduced to 10 players.