A sash window is one with two frames that can both slide vertically, thus allowing for greater airflow. This design was developed in England way back in the mid-late 17th century and has been an important part of Western architecture ever since. Sash windows are a great way to improve airflow, add some aesthetic character, and overall make your building look like a real winner.

Selection of photos of somes sliding sash windows supplyed and installed by Custom.