The Eureka Powerline 4773 4773AZ Upright Vacuum Dust Cup Container Dirt Bin Assembly is a replacement part designed specifically for the Eureka Powerline 4773 4773AZ vacuum model. This bin assembly includes a dust cup, making it easy to empty and clean out dirt and debris from your vacuum. With the Eureka brand known for quality and reliability, this bin assembly ensures a proper fit and efficient performance for your vacuum cleaner.