Stainless Steel Letter led shoe box light Name:Stainless steel letter advertising sign Material:304 stainless steel face and return, PC backer Usage: Outdoor Power:Input:110-240V AC,Output:12VDC Size:12 inches tall Style:LED back lighting Certificate:CE,UL Finish:Powder coating black ONLINE SERVICE SKYPE:luyanfeihelen LED back-lit Stainless steel Signs is the common type of illuminated signs; it can be very good to show the contours of the sign even in the night. Basically, light passes through the back of the sign causing it to light up at night. Found in 2005, Dragon Signs Technology Co.,LTD is specialized in manufacturing, designing and developing outdoor LED signs ,metal signs etc, we are a UL Certified sign manufacture in china.