Sash line is a term used in construction and architecture to refer to a narrow strip of material that is typically attached to a window sash. This term is usually associated with traditional window designs and is commonly used in vintage or older homes. In some cases, a sash line can be referred to as a sash cord or a window rope. Other synonyms for sash line may include window pulley, window cable, or window chain. Regardless of the specific term used, these components play an important role in the functionality and durability of traditional windows, making it easier for the sashes to move up and down.