Ok firemant, please do not consider my comments as a negativeThe Magiglow DOES NOT normally need ANY ventilation. It is about 60% efficient. As opposed to the other one which under test conditions probably claims 20%. In a house it could even be a negative efficiency, as I think you intimidated. Those 2 fires are poles apart.
they are not at all but I would like to understand how it differs
So this magiglow ...has an open flue ? is a dfe ? probably an oxy depletion etc. It looks like an ordinary dfe so how does it differ and how is it superior ..what are its regs regarding ventilation .regards centralheatking. keen to learn here
by the way I intimated rather than intimidated subtle difference