LED Open Sign 1.Rustless 2.Over 100,000 hours life span 3.Provide predesign for confirm 4.Environmental-protection LED Open signs have the advantage ... , and over 100,000 hours guarantee3.shape: solid, channel and 3D style4.304# stainless steel LED letter with brushed or polished finish5 ... signs,school signs ,advertisement, architecture, decoration, exhibition etc. High-quality LED Open Sign