> For the complete documentation index, see [llms.txt](https://docs.besmart.software/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.besmart.software/3d-modeling-and-design/mep-hangers/commands/replace-ifc-hidden.md).

# Replace IFC (hidden)

### Replace IFC

MEP Hangers only works with **native Revit MEP elements** (Pipes, Ducts, Cable Trays, Conduits) and **Fabrication Parts**.

'**Replace IFC**' can convert the **Ducts** and **Pipes** category elements from an IFC file to native Revit elements. For this command to work, MEP elements from the IFC file must maintain a consistent cross-section (circular, rectangular, or oval) throughout the length. '**Replace IFC**ʼ doesnʼt work on fittings or accessories.

![](/files/IepGJJdQhcVSNlxGgiKo)

### Workflow

1. Select the linked IFC file in the project and use Revitʼs '**Bind Link**' command.

   ![](/files/XQvmNsWWsQegZG8giv3e)
2. After that, the IFC link becomes a Model Group element. '**Ungroup**' to continue.

   ![](/files/czIVmjngrSFYdBItUb7i)
3. Run the '**Replace IFC Ducts**' or '**Replace IFC Pipes**' command, select the respective elements in the project, and hit **Esc** when finished. Selected elements are now converted to native Revit **Ducts** or **Pipes**.

![](/files/evSJL6fkR2gUhCVVA25e)

IFC pipe or duct elements with insulation sometimes come as a single IFC element when exported with software other than Revit. For that reason, you can specify insulation thicknesses in '**Replace IFC Configuration**'. Selected pipes or ducts will now be converted to smaller sizes by subtracting these insulation thickness values.

![](/files/KkIpnfNis9evw3h9NPsS)


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