PurCity's patent pending solution (GapS), consists of novel industrial facade panels that are great substitutes for exterior facades/flat surfaces of any New/Existing buildings. Leveraging from chimney effect/natural ventilation, polluted air is naturally sucked into the panels and forced to pass through a harmless chemical process that traps CO2, particulate matter PM2.5/10 & inorganic gases. Then clean air will be delivered into the building through the Air conditioning (HVAC) system. GapS utilizes smart monitoring and control solutions, to optimize its performance. The collected polluted liquid is continuously recycled, generating valuable byproducts like Hydrogen, pure O2 and CO2 that are sellable in the market, benefiting sectors such as food, cement and agriculture.