Product Information HP Envelope Feeder for Laserjet 8000 /8150 Series and 5si p/n c3765b New  Product Details HP Envelope Feeder for Laserjet 8000 /8150 Series and 5si p/n c3765b Availability: Usually ships in 2-3 business days. c3765bRegular price: $399.00Sale price: $319.00