Also does anyone in my area have an opinion about paneling? I see that a lot of GHs have 4 mm double and others have 6 mm. Is there a big difference in the winter?

Thanks -

I cannot compare it to others, but it has served me well.
It came truck-shipped in two large/flat/heavy boxes, and an electric (battery) screwdriver is recommended to attach the fiberglass paneling. But after initial set-up, it will disassemble into 4 walls, 2 roof panels, and two bench shelves.

=FB=