Huawei DBS3900 Installation Manual page 140

DBS3900 LampSite
Installation Guide
To prevent inhalation or eye contact with dust, take adequate preventive measures when drilling holes.
The bolt used for installing the pRRU on a suspended ceiling plate depends on the plate thickness:

Issue 08 (2016-05-30)
Figure 8-22 Drilling holes by using a crown saw
c. Use a bolt (M4) to partially connect the mounting bracket and the U-shaped metal
plate, as shown in Figure 8-23.
Figure 8-23 Partially connecting the mounting bracket and the U-shaped metal plate
The delivered bolt (M4x35) is used if the plate thickness is less than 25 mm.
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8 Installing a pRRU3902 or pRRU3911 or
pRRU3911+WIFI
133