The vacuum is created for not allow sawdust and woodchips to pass through the fan in modular bag systems. Therefore, energy consumption and maintenance cost is reduced. Thanks to the PLC Control system, instantaneous pollution measurements and cleaning processes are carried out spontaneously Also, Hot air which is absorbed from the ambient of the factory can be given inside of factory instead of releasing to the outside. Therefore, you can save from the heating expenses of your facility. Besides this, absorbed air causes negative pressure and this is an unhealthy situation for your workers.  Filtered air is given back to the ambient of facility and ambient pressure becomes positive, hereby workers negative conditions are eliminated