An airport inset light adjustable alignment container set provides a light fixture and stainless steel support for airport runway, taxiway, or other aircraft ground traffic areas. A variable length extension means rotatably adjusts height and azimuth by a rotatable vertical displacement. In one aspect, a previously installed, airport inset light and stainless steel base of the present invention receives a variable length extension assembly for rotatably adjusting the height and azimuth alignment of an airport inset light. Rotation locking means are provided for securing the rotatable adjustment apparatus from further rotation. A novel stainless steel base is adapted to receive various different designs of inset lights and, in one aspect, to provide a stainless steel protection ring “mud dam.”