Additional Revit files from Ledalite including the ArcForm lay-in. Let me know if you need help with these.
-Shad Asebrook
http://www.ledalite.com/service/revit

Ledalite Revit Families Feature:
Functional Format
Face-based (rather than ceiling or wall hosted) families make it possible to use the files in both the architect model and in linked files used by contractors, regardless of which Revit suite being used.
All lighting fixture families contain an electrical connector to facilitate downstream Revit performance modeling in the development of electrical drawings and calculations.
Parametric Variables
Variable dimension parameters allow designers to change luminaire suspension length or mounting height of fixtures as needed.
Parametric controls allow designers to control the visibility of endcaps, sensors, suspension cables, etc.
Color + Clarity
2D Plan View symbols help keep layout drawings clear, easy to read, and minimize document file sizes.
All family drawing elements are assigned a material or finish type to facilitate realistic Revit renderings.
Always Up to Date
Each Revit file includes a date field in the Family Types dialog box. As subsequent revisions and modifications are made to the models, this date will be updated making it easy for users to identify the most current family version.