| 摘要 |
The invention provides a screen door system for double-hung entry doors. The screen door system comprises an inner screen assembly containing a frame member carrying a screen member, an outer screen assembly containing a frame member carrying a screen member, inner and outer upper tracks for slidably guiding the inner and outer screen assemblies along the length of the tracks and for limiting lateral movement of the inner and outer screen assemblies as the screen assemblies move longitudinally along the tracks, and a lower sill leaving an inter guide rail for longitudinally guiding the inner screen assembly and an outer guide rail for longitudinally guiding the outer screen assembly.
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