Tip: For linked models open up the linked model and see what the element category is.

  1. The element is temporarily hidden
  2. The elements category is temporarily hidden
  3. The element is hidden in the view
  4. The elements category is hidden in the view
  5. The element is being obscured by another element
  6. The element's category or subcategory is hidden in the view
  7. The element is outside the view's view range
  8. The view's far clip depth is not sufficient to show the object
  9. The element resides on a workset that is not loaded within the project
  10. The element resides on a workset that is not visible in the view
  11. The element resides on a workset that is not loaded in a linked file
  12. The element resides on a workset that is not visible in a linked file
  13. The element resides within a group (detail model) and it has been excluded from the group
  14. The element is part of a design option that is not visible in the view
  15. The element is part of a linked file that is not visible in the view
  16. The element has one or more of its edges overridden to display as '<Invisible lines>'
  17. The element is a family and none of its geometry is set to be visible in the view type
  18. The element is a family and none of its geometry is set to be visible at the view's detail level
  19. The element is set to not be visible at the category's detail level
  20. The element has been placed outside the view's crop region (visible extents)
  21. The element is an annotation object and does not reside entirely within the annotation crop region
  22. The element's phase settings or the view's phase settings prevent the object from displaying in the view
  23. The view's discipline is prohibiting the visibility of the object IE Architectural does not display Fire Alarm Devices even when the category is switched on.
  24. The element is affected by a filter applied to the view
  25. The element is subject to an element override, set to background colour
  26. The element is subject to a category override, set to background colour
  27. The object style is set to background colour
  28. The element is constrained to a scope boxes that is not visible in the view
  29. The extents of the object itself don't permit it to be seen
  30. The element is a mass, and 'Show Mass' is turned off
  31. The element's host view has been deleted (area boundaries)
  32. The view's scale is prohibiting the object's visibility
  33. The element is a linked instance with coordinates too great for Revit to handle
  34. The user has incorrectly identified the link instance to which the element belongs
  35. The element is in a link that is not in its correct position
  36. The view's visual style is prohibiting the visibility of the object IE On Realistic setting the Ceiling Grids may not be visible.