701,430. Fly-screens. MAHLOUFF, S. K. May 6, 1952, No. 11462/52. Class 20 (3) A fly-screen for sliding sash windows is adjustable endwise to fit windows of different widths and vertically in accordance with the amount by which the window is opened. A screen is secured within a frame 6 and is mounted on a spring roller within a housing 8. A similar screen is secured within a frame 7 and to a spring roller within a housing 9. The frames 6, 7 and the housings 8, 9 are connected for relative endwise movement. The frames are clipped at 28, 29 to the bottom rail 32 of the lower sash and the housings are clipped to the sash guides.