RT Compatible Toner Cartridge Replacement for HP Q1338A 38A 42A Q5942A for use in LaserJet 4200 4240 4250 LOW COST, HIGH VALUE. RT replacement for HP 38A 42A toner. Printing cost is as low as .005 cents per page, up to 60% less than HP Q1338A Q5942A original toner cartridges. QTY: 1 (1 Black) RT Compatible HP 38A 42A toner cartridge REPLACES OEM #: HP Q1338A Q5942A HP 38A 42A | Yield: 12,000 pages based on 5% coverage COMPATIBLE with HP LaserJet Printers: 4200 4200n 4200tn 4200dtn 4200dtns 4200dtnsl 4240 4240n 4250 4250n 4250dtn 4250dtnsl 4250tn 4350 4350n 4350tn 4350dtn 4350dtnsl LIFETIME WARRANTY. We honor our warranty regardless of purchase date, even if the Amazon return window has closed