You can never have too much storage space, and one of the best ways of increasing it is to use the ceiling voids.

Draw the cables up into the ceiling void, and reconnect them to a four-terminal junction box.

A concealed fan coil unit will typically be installed within an accessible ceiling void or services zone.

It is quite common for the return air not to be ducted and to use the ceiling void as a return air plenum.

They are primarily designed and used for return air or extract air purposes within building ventilation systems, more commonly located within ceiling voids or other similar plenum.

Furthermore, all air-conditioning ducting, electrical trunking and piping gathered inside the core area had to be squeezed into a very narrow and congested corridor ceiling void.

Supply diffusers in the ceiling are fed by fan coil units in the ceiling void or by air handling units in a remote plant room.

The fan coil or air handling unit take in return air from the ceiling void and mix this with fresh air and cool, or heat it, as required to achieve the room design conditions.

Leave some slack at the point where the cable enters slack at the point where the cable enters the floor or ceiling void, to allow it to be bedded in a recessed chase cut into the plaster at some future date.