Ive designed it for Martian II, but its mounted on the top from FC, 30,5x30,5.
So I think it works on many frames.
The holes for antennapipes are 3mm
I am not satisfied to the design, with a "normal" PDB it doesnt work (on MartianII), so i designed 2 other Version, but I have to wait, till my screws are delivered, to post mounted pics.
V3 ...its for spacer to spacer, 32mm, mount, stack on IRC and/or OSD ...but here the same Problem, I am not satisfied, so....
V4 ...mount on FC
100% (Walls and bottoms only ;-D)