When a single-hung window is opened, the lower sash partially obscures the upper sash.The bottom sash of a single-hung window can move vertically because the upper sash remains stationary.
Post time: Apr-27-2022
Views: 0 Author: Site Editor Publish Time: 2024-03-04 Origin: Site
When a single-hung window is opened, the lower sash partially obscures the upper sash.The bottom sash of a single-hung window can move vertically because the upper sash remains stationary.