Window and frame structure therefor

A window structure comprising a window frame and a glazing unit held by said window frame in an opening of a panel such as a door having two exposed opposite face portions surrounding said opening, said window frame comprising two frame sections engaging on the opposite sides respectively of said glazing unit and on the opposite face portions respectively of said panel, said frame sections being of identical cross-sectional shape and each one including an inner portion overlapping said glazing unit, a peripheral portion, and a rim portion outwardly projecting from said peripheral portion and overlapping said face portions of said panel, the peripheral portion of both frame sections having transversely-projecting pawl teeth, H-shaped clips interconnecting said frame sections, each clip including two oppositely extending pairs of legs, the legs of each pair receiving therebetween said peripheral portion of one frame section, one leg of each pair having ratchet teeth selectively engageable by said pawl teeth, said clips positioned outward of said glazing unit and adjustably engaging said pawl teeth of both frame sections and disposed transversely of the window frame, so that the rim portions of the two frame sections can be pressed against said face portions of said panel despite variations in the thickness of said panel and such that said glazing unit can be centrally positioned relatively to the thickness of said panel.