This envelope feeder is compatible with all of the following printer models:
HP LaserJet 4350, 4250, 4300, 4200, 4100, 4050, 4000
C39727A HP LaserJet 5 envelope feeder - no longer available
C3765B HP LaserJet 5si, 8000, 8100, 8150 envelope feeder - no longer available. However we do have parts! Call us if you want to send your envelope feeder in for repair. 866-352-7108
C4122A / C8053A HP LaserJet 4000 and 4050 envelope feeder C4122A / C8053A - Refurbished - no longer available
