Abstract: A ROPS-capable cab frame beltline support member for a vehicle cab frame which includes left and right rear corner posts. The beltline support member extends between the rear corner posts and is spaced apart above the lower ends of the posts. The support member includes first and second parts welded together. The support member includes a central portion, a left end fixed to the left rear corner post and a right end fixed to the right rear corner post. The central portion is offset rearwardly with respect to its left and right ends. The first part includes a midportion, a left flange portion and a right flange portion. The midportion has a C-shaped cross sectional shape. The midportion of the first part has a wider upper side, a back plate and a narrower lower side. The second part includes flanged ends and an elongated member having a first edge which engages an inner surface of the first part, and having a side surface which engages an edge of the first part.