A chimney knee of 45 degrees is used 
when it is necessary to flue the chimney 
at an angle when using Sogra, 
Gravitsap KC, Median, and Parobomb ovens 
in tents of other manufacturers. 

Or when using the Gravitsap 
KTs and Parobomb stoves (without a built-in 
spark pot) in Mobiba and Rosnar tents 
to remove the chimney at an angle. Reducing the 
likelihood of sparks from the 
stove chimney on the tent awning.

 
Pipe diameter: 90 mm.
Bending angle: 45 degrees