SPEEDYINKS 20-pack of compatible thermal fax cartridges/rolls — a non-OEM aftermarket alternative to genuine Brother thermal fax supplies, engineered to produce sharp, archival-quality fax output at a fraction of the brand-name price. Replaces Brother PC301PK20, with a rated yield of approximately 250 pages per roll based on ITU-T No. 1 test chart. COMPATIBLE MODELS: Intellifax 750, 770, 775, 870MC, Fax 885MC, 885MC, MFC-970MC HIGH 250 PAGE YIELD: Print more for less with an estimated 250 pages per ink cartridge at 5% coverage. MANUFACTURING & QUALITY: Built with all-new precision components — fresh thermal transfer film, durable plastic cores, and consistent ink-coat density. Each roll is wound and assembled in an ISO 9001 / ISO 14001 certified facility and tested for film tension, coating uniformity, and image transfer consistency before shipment. Your purchase is protected under the Magnuson-Moss Warranty Act — using a compatible fax cartridge will not void your fax machine's warranty. INSTALLATION: Open the fax-machine ribbon door, remove the spent roll, snap the new film cartridge onto the supply and take-up spindles, and advance any slack per the OEM manual. STORAGE: Store sealed in a cool, dry location below 95°F, away from direct sunlight. QUALITY GUARANTEE: Backed by a 1-year limited replacement warranty. Brand and model numbers are referenced solely to indicate machine compatibility — Brother is a registered trademark of its respective owner and is not affiliated with SPEEDYINKS. PACKAGE CONTENTS: 20 compatible thermal fax cartridges.