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The sad reality of model railroading is that there are space limitations on the layout. Tracks run close to walls, and real estate is reduced down to a matter of inches. Painted and printed backdrops visually extend the area, but often do not provide the level of detail desired.
The Behind the Scenes series of kits will do the trick. These are designed to sit against the walls and backdrops that limit the layout and will give the extra detail desired. These kits are more than simple building flats, so they will help visually extend the depth of the layout. No rear walls are included.