The Saey fenix 80 stove is the biggest of the 3 Fenix insert stove models.
It has a 13kw output & like the other Fenix models it has a fan assisted motor -
you can either use this motor on a turbo boost when you first light the stove in order to get the room hot quickly
or
leave the motor on a lower setting or turn it off completely.
You use a 4 sided frame when placing the stove on the wall
&
usualy use the 3 sided frame if stove is positioned on the floor.