Detailed Product Description Gateway Flex Banner ( Frontlit Flex banner, backlit flex banner): Frontlit flex Characteristic:Frontlit flex selects top ... ; 2)208GSM,300GSM,320GSM available; 3)White substrates for banner wide format digital printing; 4)Weather resistant (UV, rain ... ; 2)208GSM,300GSM,320GSM available;3)White substrates for banner wide format digital printing; 4)Weather resistant (UV, rain ...