Adjustable door frame assembly and method of installation

An adjustable door frame assembly for framing a door opening, the adjustable door frame assembly comprising:

• first and second alignment members providing a first securing structure to a door opening, one of said first and second alignment members being rotatably connected to a door during installation;
• an alignment header connecting said first and second alignment members along an upper end of said alignment members;
• an alignment assembly located within at least one of said first and second alignment members, said alignment assembly comprising an adjustable stop for locating said adjustable door frame assembly about said door opening;
• and
• first and second cover members providing a second securing structure to the door opening independently of said first securing structure;
• wherein said alignment assembly further includes a fixture having a threaded opening rotatably supporting said adjustable stop such that the adjustable stop is rotated about the threaded opening to move the alignment members near or away from the opening by relative rotational movement of the adjustable stop;
• and
• wherein rotation of the adjustable stop causes displacement of one of said first and second alignment members in a direction laterally across the door opening.