Mounted face up these diminutive (2.5" x 2.5") cubic fixtures add a pleasing indirect glow to a space, with optional 4" tall opal polycarbonate diffusing cylinder available to enhance the effect. Face down they illuminate a nightstand, a table, or any other horizontal surface. ADA-compliant Callisto by Trilux features line-voltage PAR16 halogen lamping; may be specified as single or double units.