Due to limied space I fabricatec a hinged shelf that mounts to the bottom of the ribs running from the firewall to the subpanel. It is 6.5" wide x 19.5" long and will fit three modules; the VHF remote, the ADSB-in module and the transponder (not shown). It will hinge down for access under the instrument panel and there will be access panels (yet to be done) on the skin above this shelf.