[Mint68]

It is single. As said above bolts from top of bed rail down, there is a lip with chrome trim the bolt runs through, double will have no lip, and mount from bottom of bed rail up. Dome lights are only in single wall tops, and the inside roof line is different. They are lighter, and less susceptible to the nasty waves on the outside roof top.

Looks like a nice blazer its on, going to buy the whole thing or just the top? I think the ochre and saddle combination is pretty neat.