I built this railing for my front porch. The railing has a top rail, a bottom rail and balusters between them. The balusters are spaced to our local building code (4" gap) There are 4 configurations. You can download the Blender file with all four configurations. Each configuration is saved in separate scenes. The configurations have also been exported from Blender as 3DS, Collada, OBJ and STL file formats.