![Dahua DHI-PHMIA135-AC Quick Start Manual Download Page 19](http://html2.mh-extra.com/html/dahua/dhi-phmia135-ac/dhi-phmia135-ac_quick-start-manual_5111516019.webp)
Figure 3-12 Fix the middle column
3.4.2 Installing Other Columns
Procedure
Step 1
With the middle column in the center, install the other columns on both sides. After
installation, slide them to the middle to ensure that there is no gap between columns,
and then use the screws to lock the columns.
Quick Start Guide
18