Abstract: An adapter bracket which enables the installation of a door frame or louver into a recessed fixture that sits on a T-bar supported by a ceiling without having to custom design a hinge and latch system to match the original fixture or require the installation of a false frame that lifts the fixture. The brackets slide between the T-bar and the existing fixture. The bracket is also slightly wider than the T-bar opening. The door frame will keep the brackets spaced wide enough to ensure that the assembly would not fall out of the opening. The hinge and latch mechanism for the door frame is built into its end rails and latches onto the bracket to ensure the door frame is supported and held in position.