Patent ID: 7025405

Claim:
A window frame assembly, comprising: a one piece fixed panel defining a plane, the fixed panel having a window aperture defined therein, the window aperture having an upper aperture edge and a lower aperture edge that are parallel to each other; a first stationary rail and a second stationary rail disposed on a major inner surface of the fixed panel, the first stationary rail being positioned above and parallel to the upper aperture edge, and the second stationary rail being positioned below and parallel to the lower aperture edge, the rails being only in a plane offset to the plane of the window aperture; and a sliding panel assembly comprising at least one slider panel having opposed first and second slider panel edges, a first locator rail disposed onto the first slider panel edge, and a second locator rail disposed onto the second slider panel edge; wherein the first locator rail is brought into mating contact with the first stationary rail and the second locator rail is brought into mating contact with the second stationary rail, the sliding panel assembly being capable of sliding movement across the stationary rails in the offset plane and at least partially closing the window aperture.