The act curtain has been an essential component of stage productions for many years. However, it can be referred to by many synonyms. For example, it's commonly called the grand drape, main curtain, or house curtain. The grand drape is a term used to describe the curtain's size and is typically used in large theaters. The main curtain is a more generic term for the act curtain and is used in smaller productions. The house curtain is usually used in venues other than theaters, such as opera houses or concert halls. Regardless of what it's called, the act curtain remains a vital element of any performance, signaling the start and end of each act and adding an element of dramatic flair that enhances the experience for the audience.