Installing the American-style folding window lifter is straightforward and user-friendly. Simply attach the lifter to the designated points on your window frame, and you'll window operation. This accessory is for double-hung windows, allowing you to easily adjust the window height to your preference. Its robust construction with performance, making it a valuable addition to any window setup. Features -Color:White -Material:ABS -Size:20.00X1.20X0.60cm/7.86X0.47X0.24in -Size:8.80X3.10X0.90cm/3.46X1.22X0.35in -Effortless adjustment: the folding window lifter enables easy adjustment of window height, allowing for smooth operation -Enhanced security: featuring a robust locking mechanism, the up and down window accessory lock ensures the window remains securely closed -Aesthetic appeal: designed with a sleek and modern look, the folding window lifter enhances the overall aesthetic of any window -Wide compatibility: ideal for use in a variety of environments, including residential, commercial, and retail spaces, offering great flexibility -Maximized space: by utilizing the folding window lifter, you can maximize the available space when the window is open, creating open and airy atmosphere Package list: 2 x Window Tilt Latch, 4 x Folding window lifter