In this model, I have provided opening for the air on the sides for the following reasons (see the logitudinal section for deatils) :
1. It is easy to construct and steel mesh or grate is avoided, which is external raw material and not easily replaceable in the villages. So only bricks, clay and cow-dung is used.
2. The opening for air is choosen sideways, it is convinent to keep the opening open for air movement and removal of the ash without disturbing the wood or sticks. Would also push the fire towards the opening of second stove creating two updrafts (of course less intense for second stove).