Our Toner Cartridge replacements for the Canon FAX L4000 cartridges are designed and manufactured by an ISO-9001 facility and match Genuine name-brand cartridges at a fraction of the cost. These Canon FAX L4000 Toner Cartridges will provide optimal print quality and page yields. Speak to our friendly customer support for your further questions or simply find your replacement cartridges from the compatible Canon FAX L4000 toner cartridges list below now!