Though clear division is not available, "Clean room" term is used in case of building or room. A space enclosed by vinyl sheet or resin panel is considered as "Clean booth" in case of willingness to increase the cleanliness factor in a clean room or air-conditioned room. Size is 1.5m to 5m and clean air is introduced in the booth with a provision of FFU (Clean Fan Unit) in the ceiling.
Have become popular in recent years, not on the basis of its size, but considering it as a simple, cheap, movable structure with cleanliness factor and not violating the construction code or Fire services act.
*With regards to the construction code or fire services act, there is a possibility of conflict with the standards of local authority or company of client. Also, the size that can be erected over a desk is termed as "Simple clean bench"