Fly Ash Collector Unit effectively arrests 97 percent to 99 percent of particles and brings down the final exhaust emission level not exceeding 100 mg/Nm³. The Unit is provided with venturi throat that is set to operate at desired pressure drop for highest collection efficiency. The Unit is installed before or after the ID fan of the boiler for exposing 100 percent of flue gas. Fly Ash Collector Unit is most suitable for different kinds of industrial applications.