Lithonia Lighting Dry wall grid adapter is designed to easily convert recessed grid troffers or panels to recess drywall mounted fixtures. The DGA measures 48 Inch x 24 Inch and is designed to used with 2 ft. x 4 ft. recessed troffer in commercial and residential spaces. It includes adapter frame and screws. Adapter is UL/CSA listed. Flange kits and flange trim kit are not required when a fixture is installed into a DGA.