While each type of SMOKjet smoke generator can be used in different applications, and while the SMOKjet RH is the most versatile unit of all, many fish producers who need a lower temperature smoke over longer periods of time choose the SMOKjet RF friction smoke generator. Not only does it produce significantly less heat, which is particularly important for fish that needs to be cold smoked, it also works within a recirculating system, meaning that less smoke exits the smokehouse, thereby reducing emissions and preventing the need to install emissions cleaning systems.