[bennelson]

These panels have bent sheet metal aluminum frames. That makes them fairly lightweight.

Not as sturdy as the 4'x10' hot water panel I picked up a while back, but much easier to handle as well.

These panels are 6.5' long and a bit less than 3' wide.
It looks like it was originally sort of a doubled hose clamp sort of a device that would connect the two.

The panels were Sawzalled apart, so some of the copper tube is either jagged or short. I will have to take the frame apart to get better access to the 1" copper manifold to be able to clean it up and and solder anything on there.

Just soldering a union straight on there sounds like a pretty good idea.

I will let you know more when I actually get some time to work on it!