Any ETA arm on this site can be built and shipped ready to be field mounted from overhead. When requesting pricing, just add -OM to the end of the model number if you intend to mount your arm from overhead. Example EL506-UV-OM
Ordered as a left hand or right hand fold, this option allows the forearm to fold completely flat to the paralell rack and is passively held in that position between assembly cycles with adjustable magnetic park. Not for use on 306, 506, or 806 Frames.