The present relates to a sidelite assembly having first and second panels and a window. Each of the panels has an inner edge extending outwardly from a major planar portion and surrounding an opening. The inner edge includes a first portion having a ridge extending outwardly from a distal end thereof and a second portion having a channel extending inwardly from the distal end. An outer edge extends outwardly from the major planar portion and adjacent a periphery thereof, and includes a first portion having a ridge extending outwardly from a distal end thereof and a second portion having a channel extending inwardly from the distal end. The ridges of the first panel are aligned with and received in the channels of the second panel. The window is disposed within the opening.