Patent ID: 8555572

Claim:
A storm window assembly comprising: a first pane assembly and a second pane assembly, each of the first pane assembly and the second pane assembly including two or more glass panes, at least two of the two or more glass panes being separated by a sealed, gas filled space; a sliding storm sash, the sliding storm sash including the second pane assembly and being adapted to slide along a linear track; a channel balance, the channel balance residing substantially within the sliding storm sash; a peripheral flange, the peripheral flange extending radially outwardly around a storm window assembly periphery and having a flange thickness in a range of approximately 1.0625 inch to 1.125 inch, the flange thickness residing along an interior-exterior axis; and an exterior ridge, wherein the two or more glass panes of the first pane assembly are rectangular and the exterior ridge resides around at least three sides of the first pane assembly and projects exteriorly 0.25 inch to 0.50 inch beyond the peripheral flange, wherein the peripheral flange extends radially outwardly beyond the exterior ridge, and a thickness of the storm window assembly, measured from an exterior-most portion of the exterior ridge to an interior-most portion of the storm window assembly, is less than 2.625 inches.