In our pack, we meet at our chartered organization (a church) during den meeting weeks. We have den signs designating each den’s room. The signs are put over the doorway before den meetings start and are taken down afterward.
Here is a link to the den signs we use (Word format) in case they would be helpful for your pack. There is one sign each for Tigers, Wolfs, Bears, and Webelos. You can add den numbers if you would like.
The signs also may be helpful for seating arrangements during pack meetings.