The FXLuminaire VB050FW is a Flat White .5" Thread Versa Box. It has a brass junction box with a ½" thread. It includes a setscrew for adjusting fixture angle and features a cavity that hides the wire connectors for a cleaner look. It's dimensions 2.2" x 1.5" (570 mm x 390 mm). It is a genuine FXLuminaire product.