This front door assembly is a replacement part for Tray 2 cassette, compatible with Pro 400 M401, M401dw, M401n, M401d, M425, and M425dn printer models.It is designed to fit into the designated tray slot and functions as an integral component of the paper feeding mechanism.Each unit undergoes inspection prior to shipment to proper functionality.Packaging is secure to prevent damage during transit.Product appearance may vary slightly due to manufacturing updates, but functional compatibility remains consistent across versions.