... have Special function----retaining heat and chilled air,flying insect control,maintain sanitary requirements.Normal plain ... energy-retain temperature and control airflow,effective reduction in heat,cold and humidity-loss,noise and dust transmission,otherwise ... Light for Safer EnvironmentResists Ultraviolet radiation and StaticProvides Bird,Mosquito and Flying Insect ControlIsolates Noisy MachineryTYPE: ...