Brace horizontally from one wall to another; allowing for unlimited vertical deflection, ultimate clash avoidance and accommodate impractical plenum heights. Connect to the head track (min .75BMT Steel or 1.3mm Aluminium Section) with 10 gauge wafer tek screws or timber top plate (90 x 45mm SG8 Radiata Pine or Douglas Fir) with 10 gauge 35mm wood screws. Vertical adjustability is built into each unit to accommodate for troffer lights and sprinkler pipes.