The 10" tall 19" to 33" wide Adjustable Window Screen has a long-lasting wooden frame with a durable mesh, bright metal screen. It allows fresh air to circulate throughout home, while keeping out bugs or insects. This metal rail extension window screen accommodates windows between 21" and 37" wide. No hassle, tool-free installation and adjustment. The tenoned corners keep the screen square. These window screens include use as a standard window screen or used in place of a window air conditioner for fresh air ventilation.