This hinge up low replacement part is compatible with the following models: M2040, M2135, M2540, M2635, M2640, M2735, P2040, P2235, M5521, M5526, P5021, and P5026.It corresponds to manufacturer part numbers 302S018610 and 302S018620.Designed for performance in both standard and heavy-duty applications, this component ensures consistent door alignment and smooth in commercial and industrial settings.