a fixed window for use in an opening in a supporting structure . the window comprises a glazing material , a spigot , an interior trim ring and an exterior trim member . the glazing material is bonded directly to the supporting structure , which provides a window that is less likely to be pushed through the opening in the supporting structure when exposed to harsh environmental conditions and is less likely to leak when compared to framed windows . the exterior trim member is dimensioned to substantially shield the sealant used to bond the various components together from ultraviolet radiation , thus permitting use of stronger , ultraviolet radiation sensitive sealants . the components that comprise the window frame that holds the glazing material are produced from a unitary blank that can accommodate glazing materials of various thickness and can be installed on supporting structures having various thickness .