What screw size is for mounting holes of FOCBOX? Mike Schmeller August 23, 2019 01:28 Updated Follow You need M3 screws for the mounting holesDiagram attached for reference Related articles Focbox Physical Dimensions What is the Focbox? How do I configure my Focbox? How to install the Unity on a Raptor 2 How to put Unity on always on mode? Comments 0 comments Please sign in to leave a comment.