Used the 69mm version with the G6 Turret that needed more clearance from the bottom of the soffit to avoid the IR reflecting off them making the night view almost unusable. Getting it screwed in was difficult as access to the screw holes is limited, but I made do with a shaft extension and enough spare screws to compensate for the ones I dropped. I also have concerns about it's longevity holding up a camera outside in our Canadian weather, but that's nothing against the model. Worst case I print another one.