Abstract: Construction and remodeling of a cleanroom wall system is facilitated with a universal stud design. A variety of wall configurations may be assembled with the same stud. Also provided is a useful connector block for joining perpendicularly oriented studs, or for splicing together axially aligned studs. A corner stud is also provided, as well as a deflection track for connecting the top track of a wall panel to a conventional ceiling grid to allow deflection of the grid relative to the wall and to facilitate easy access to the portion of the ceiling immediately above the wall panel.