nice shots Bigplanz. I guess this is what would be considered a fairly universal 'sleeve' among us.

a few characteristics come to mind here,

first the conductor isn't stripped, the eliptical cross section normally being considered in a raceway assumably due to captive heat not being a problem

secondly, the usual reference is made to 'short sections' , which has been considered to be self defining as the maximun length normally available for our trade, re; 10 feet

that said, i did have the thought that i purchase 3/4" greenfield (flexible mettalic) in 100' rolls

so this then introduces the possibility of a 40', or say 60' 'sleeve'

also noted is that 'sleeve' need only be open at one end.

Now i know i'm stretching the undefined here, but it is possible to construct two pieces fixed electrical entities qualifying as 'sleeve' merely via being broken in the middle

~S~