Thanks, 2'X6" any type of wood that is typical used outdoors. This is old redwood fencing.

1" or 2" thickness?

And how can you get different shade, wood from different fence?, not same exposure to sun? Different age?

this was 1/2", picked through a pile of old fence boards and mix during installation

Great looking shed. Does moisture get inside? I’m trying to understand if you belongings get rust on them inside? Thank you.