---
title: "Fit Duct"
slug: "cloudworx-fit-duct"
updated: 2026-09-07T08:34:55Z
published: 2026-09-07T08:34:55Z
canonical: "rcdocs.leica-geosystems.com/cloudworx-fit-duct"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://rcdocs.leica-geosystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Fit Duct

**revit**

## **Fitters | Fit Duct**

This fitter allows users to fit both round and rectangular ducts using Revit families.

![image-20240731-152932.png](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/image-20240731-152932.png)

---

### **Using the Tool**

To fit a duct, follow the steps below:

1. Click the **Fit Duct** icon in the **Fitters** panel.
  1. The **Fit Duct** dialog will open. ![image-20240731-153423.png](https://cdn.document360.io/820e11db-8ed5-45ae-ac86-f6b77dcb2aa7/Images/Documentation/image-20240731-153423.png)
2. In the **Fit Duct** dialog, modify the settings as follows:
  1. In the **Maximum RMS Error** field, specify a maximum allowable error for the fit.
  2. In the **Select Level** field, select the level to which the element should be added.
  3. In the **Select duct system type** field, select the duct system type.
  4. In the **Select Family** field, select a duct family.
  5. In the **Select duct type** field, select a duct type.
  6. Click **OK**.
3. Click on the duct in the CAD window or TruSpace.
4. A dialog that prompts you to accept the suggested type from the catalog will appear. If the type is not a close enough fit, select **Create new type**:
  1. Define the name and size of the new type.
  2. A new entry will be created in the family and the new type will now appear in the list for future duct fitting.
  3. Click **OK**, and the duct will be placed.