What is/are in the package? 1-Pack 26A CF226A Toner Cartridge How many pages do these print up to? Each prints up to 3,100 pages based on 5% coverage (Standard Yield) How do you install the toner cartridge? ?Remove the orange cover ?Pull out the plastic tag (where you see the orange ring) which is on the side of the cartridge, if applicable ?Insert into the printer ?Enjoy printing! What are the compatible printers? HP LaserJet Pro M402dn/M402n/402dw Printer HP LaserJet Pro MFP M426dw/426fdn/426fdw Printer What is the warranty? GTS offers money back warranty on defective toner cartridges What is the shelf life? Please store the unused/unopened toner cartridges in a dry and cool place. Avoid sun exposure Have a question or a problem? Please do not hesitate to contact us, our Customer Services Team will usually response your email or message within 1-2 business days.