?High-quality Window Screens?Adjustable window screen is designed for all types of Windows, allowing you to enjoy the breeze. This expandable window screen is specially designed for double-hung windows and can eliminate your worries ?2 Sizes Available?Adjustable screens for windows adopts 2 ways of using. Horizontal dimensions: 18 inch x 25 inch, expand to 49 inch wide; Vertical dimensions: 25 inch x 18 inch, expand to 35 inch wide, you could choose it either way ?Premium Material?Adjustable window screens expandable with high strength aluminum frame, more durable, not easy to deformation. Fiberglass screen mesh is 18 X 16 (apertures per square inch) ?2-Ways instructions?First, Find and use tool (include) to remove set screw; Second, Slide the two screen panels apart; Third, Reinsert guide pieces into the opposite frame channel; Finally, close the screen and reinsert set screws ?Easy to Install?Only need to open the window, insert the adjustable window screen, expand it to the appropriate width, and finally close the window. More convenient, simple, fast design, will let you feel the breeze blowing from the window