Junction Box - round or square?

[MrGlasspoole]

If i look into the Dahua Accessory Selection:
http://www.dahuasecurity.com/asset/upload/download/Accessory_Selection_201712294.pdf

I wonder about the PFA130-E (round) for the HFW5 cams.
All the images of HFW5's show a square mounting but in the PDF they are round?

 

[Yollie]

I don't know the answer to that question but I can tell you that the turret IPC-HDW4231em-as fits on the round junction box PFA139 AND the square pfa121 because I tested it.

 

[MrGlasspoole]

Yes but the IPC-HDW4231EM-AS is round.

In the drawing of a IPC-HFW5231E-Z5 they don't have the distance of the holes.
They PFA130-E seems to have holes for square mounting on a 68.5 mm diameter.

I also wonder if not this will happen: