About using the 3D Effects toolbar in ArcScene
Using the ArcScene 3D Effects toolbar, you can access a layer's display properties without opening its properties dialog box. Use the 3D Effects toolbar to adjust a layer's transparency, change its face culling, toggle its lighting, set its shading mode, or rank its depth priority.
Face culling is a property that is only accessible from the 3D Effects toolbar. Use culling to turn off the display of front or back faces of an areal feature or graphic. For example, if you have data that is surrounded by a multipatch shapefile used for a backdrop, use culling to turn off the display of one of the backdrop faces so that you can always see your data, even when zoomed outside the backdrop extent.
Below is a labeled screen capture of the 3D Effects toolbar in ArcScene.