Sweet Home 3D lets you also import libraries of 3D models stored in SH3F files. A SH3F file groups some models with their description, and can be easily installed by double-clicking on it or by choosing Furniture > Import furniture library menu item in Sweet Home 3D.
The following ZIP files contains a SH3F file you can import in Sweet Home 3D. These libraries contain the 3D models available at the free models page.