Salus Karlstad II Owner's Manual page 10

Each Barrel Sauna will need between 66-68 staves plus 1 set of the staves (narrow)
for assembly. You will end up with some extra staves (wide) and some extra
staves (narrow). The rain cover is an optional accessory.
Stave (wide)
What's Needed:
3 Adults
Claw Hammer
Ladder
Rope (optional)
Phillips Screwdriver (battery operated recommended)
17MM Wrench
Sandpaper and ¼" drill bit (optional)
10
Stave (narrow set)