14.4 "...your fifth dimension ..."

[Infinite]

Based in L/L Research's channelings I come to conclusion that the inner planes are not from others densities but are part of 3D. Here excellents quotes about this:

It is not a question of location, my brother, for the dimensions are interpenetrating. However, you exist in denser and denser vibrations, according to your abilities. All of you exist into the fourth dimension, and there are adepts among you who are working at this time, actively, in the fifth dimension and are attempting to understand some of the teachings of the inner realms of the sixth dimension. There are a few people who work as far as the eighth, but there are two within this room who have seen it in visions and are aware of its nature, although they could not maintain it for any length of time. This is the octave of your universe, and these are the dimensions of that octave. To go beyond that, you must be free of your chemical body; and therefore we are talking to a roomful of those who are not going to be doing that any time terribly soon; however, there are many, many infinities to explore within those dimensions and much wisdom to learn. Therefore, we urge you onward; for the path becomes lighter, the teachings truer, and the laughter happier.

W: Would these creatures be of another density and still nonetheless be able to have appeared on this planet and made themselves aware to third-density beings, and what would be the significance of that?

I am Latwii, and we believe we have somewhat more information upon which to begin our response to this query. There are many beings of many forms which inhabit those planes of your planetary existence, which are known as the astral planes. These planes are not of another density, but are associated with the third-density experience. This is much likened unto the form your people take upon the passing through of the stage of death. The activation of the fourth ray or the green-ray body, also known as the astral body, does take place upon the process of death and may pass through many planes of existence which are contained within the astral and devachanic levels of your planet.

So, the Confederation's entities comes to inner planes of Earth.