Abstract: Window assemblies and methods for assembling window assemblies for railway cars are provided. A window assembly includes a first frame portion, which defines a first frame side, a portion of a third frame side, and a portion of a fourth frame side, and which includes a first body which defines a first outer channel. The window assembly further includes a second frame portion which defines a second frame side, a portion of the third frame side, and a portion of the fourth frame side, and which includes a second body which defines a second outer channel. The window assembly further includes a first wear bar at least partially disposed within the first outer channel, and a second wear bar at least partially disposed and resiliently adjustable within the second outer channel. The first frame portion and the second frame portion together define a frame aperture therebetween.