Warning sign 1.Material : metal 2.height:1.977m 3,inner diameter:878mm 4,outer diameter:930mm Warning sign frame :1. Material : Aluminium2, Galvanized square tube 3.height:1.977m4,inner diameter:878mm5,outer diameter:930mm6, hinge: 2.5 inches (2)7, chain:16cm8, Carton Boxes:197.5*92.5*5Description:Function: Advertising Poster frameOur factoryPackaging:Order Process: