An outer frame to support the installation of a panel or series of small panels. Understood to previously house the oxygen supply panel but the unit is a standard width to fit most panels.
The unit has dzus rail pre-installed ready for panels to be added and simply screwed into place.
A free small blanking plate is provided incase the panel does not quite fill the gap, but this could be removed. The item is currently in the pre-coat Boeing green, so would be ready for a topcoat of whatever colour you desire or you may choose to leave as-is.