Abstract: A cap track assembly for use with a fire resistant wall structure where the cap track assembly is adapted for attachment to a top structural member and to a plurality of wall studs. The apparatus is also directed to a method for installing the cap track assembly into a fire resistant wall structure. In one version, the apparatus provides a track assembly comprising a U-shaped longitudinal metal track having angled lips depending outwardly from the bottom ends of each of the side walls of the track, and an end tab and top tabs having longitudinal openings and depending downwardly at an angle of about 90 degrees from a top wall of the track. The track assembly further comprises a fire resistant material extending along the outer side walls of the track and supported on the lip of each of the side walls.