This pressure lower hard fuser film sleeve is designed for use with select Pro printers.It helps maintain consistent print quality and supports proper fusing performance in volume printing environments.The component is engineered for straightforward installation and may assist in paper jams and toner smudging during.Compatible with Pro M377, M477, and M452 series models including M377dw, M477fdn, M477fdw, M477fnw, M452dn, and M452dw.