| 摘要 |
A sashless window includes upper, lower and side frame members to define a generally square or rectangular frame. First and second panes are positioned within the frame and are mounted for substantially vertical and parallel movement within the frame. Each of the side frame members defines a channel into which opposite side edges of the panes extend. The channel includes elongate guide members for guiding vertical movement of the panes whereby the first and second guide members extend to positions facing front and rear faces, respectively, of the first and second panes, respectively. Each of the guide members includes a seal extending into contact with the face of the respective pane. A third guide member extends to a position between the panes and includes a pair of seals projecting in opposite directions and extending into contact with facing surfaces of the first and second panes.
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