> For the complete documentation index, see [llms.txt](https://help.holixa.com/t4r/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.holixa.com/t4r/features/list-of-features/wall-duct-or-pipe.md).

# Wall Duct or Pipe

**Icon:** <img src="/files/xRymc1hDhsysbybo2WXF" alt="" data-size="line">

**Location:** ribbon Holixa T4R, panel Dimensions

**Packages:** Holixa T4R Bronze | Holixa T4R Silver

### **Overview**

The Wall Duct or Pipe function creates a dimension between a selected wall and a duct or pipe and adds the DN parameter from the selected pipe to the dimension label. To use this function, you should first select the wall and then the pipe/duct element. This can help you accurately measure and document the distance between these two elements in your project.

#### Click to play the video tutorial ↓