Indoor Background
The Indoor Background consists of walls and floor, covers the whole board and is used for a majority of indoor scenes.
Mounted Boards vs. Unmounted Backgrounds:
Felt boards are felt backgrounds mounted to heavy duty cardboard and then reinforced with additional cardboard to create a sturdy felt board. Felt backgrounds are just the scene on a piece of felt (not made into a board). Backgrounds can be overlayed on top of an existing felt board.