This rack provides physical support to key electronics in the Ranger EX airframe. This part is printed assembled and requires no further assembly. Install with care, recommend using 2-2.5 mm diameter screws, use appropriate drill bit to widen the bore for the screws prior to installation. Confirm alignment with airframe.
It is recommended that you use receivers with detacheable antenna, and relocate the antennas away from your auto pilot and GPS. Use shielded antenna extension cables. You can also glue a layer of tin foil to the bottom side of each of the 3 trays in this electronics rack, they can provided some RF shielding, should any of your electronic device emit any interference.