Combination retrofit and new construction troffer light fixture systems and methods

A light fixture for use in either retrofitting an existing troffer light fixture or for use in new construction, comprising:

• a self-supporting adaptor bracket configured to rest on a plurality of T-bars that form an opening of a ceiling system and further configured to optionally receive a housing of the existing troffer light fixture, the self-supporting adapter bracket including a pair of sections each having a first portion collapsibly connected to a second portion, wherein the first portion is selectively repositionable relative to the second portion such that the self-supporting bracket is collapsible from at least one of an assembled orientation and an open orientation to facilitate installation thereof through the opening and into the ceiling system, and
• a door assembly including:
• a latch configured to engage a latch surface of the adaptor bracket;
• a hinge configured to interface with a slot of the adaptor bracket;
• a housing including the latch and the hinge;
• a light source within the housing;
• and
• a connection system configured to be used to wire the door assembly to one or more external components.