This variant of the basic recessed floor up-lighting unit employs a light fixture designed to fit within the plank space of the standard Utilihab deck panel system. Ruggedized for outdoor use, the unit features a waterproof housing with a light bezel and diffuser that fits within the standard width of the wood or Polylumber planking. Versions more akin to the indoor form are also used in combination with materials like stone and concrete deck panels.