Abstract: Panel construction for prefabricated patio enclosures wherein a channel-like housing is formed in the inner side to receive electrical conductors, the channel being formed in part by a frame portion of the panel having a cross web and at least one secondary web extending at an angle thereto to define walls of the housing, and wherein the secondary web or webs fix the spacing between two cross webs to provide a fixed width aperture adapted to removably receive a closure strip which retains and conceals the electrical conductors.