The Epson C12C934591 is a maintenance box designed to keep your printer running smoothly by collecting waste ink that accumulates during print head cleaning and borderless printing. By storing this excess fluid, the component prevents internal leaks and overflows that could otherwise damage the device's internals. This user-replaceable part is compatible with a wide range of models, including the EcoTank L11160, L15150, L15160, L8160, and L8180, as well as various WorkForce Pro and EcoTank Photo series like the ET-8500 and ET-16650. With a capacity supporting up to 50,000 pages, you won't have to replace it frequently, and your printer software will automatically notify you exactly when a new one is required.