I just ordered the MakerMade M2 wall mounts.
The assembly guide does not indicate how far from the wall the two legs rest on the floor.
(i.e. there is no “side view” drawing)
This is important for me, because am building a floor that the machine will rest on,
a) there is little point in beefing up the the floor between the waste-board and the wall
b) I want the weight of the legs to be supported firmly by a floor joist.
We found that about 15 degrees was the right angle for the machine to be mounted. I’m not sure exactly about the M2 design, but I would plan for about a 15 degree angle out from where the motors are attached to where the feet land.