There will be a cent-vac system. This will require dust inlets to collect dirt and dust and suck it through the pipes to the cent-vac system. Every 6 months, the system will have to be turned off so the bag can be emptied and taken to a dumpster. Once the bag is reloaded, it can be turned on again, and used anytime the vent inlet is open. Obviously, the inlets will have to be closed when finished using it.