Definition
Room divider is a boundary wall / baffle fixed (cannot be shifted or moved around) and the meeting from the the floor to the ceiling or at least as high as 2 m.
1. Concrete is roof made of a mixture of cement,corals and sand with water.
2. Wood is roof layered with wooden tiles,usually made of ironwood,or ulin wood (ironwood from Borneo).
3. Bamboo/fiber is wall made of bamboo or fiber. Including in this category is wall made of bamboo weave with size less than 1 m X 1 m.framed in wooden beam and plastered with cement and sand.
4. Others for other types not included in category 1-3.