... Backlit Letter Sign: 1MaterialReturn sides: 304 grade stainless steelFront and back: Acylic plate2ProcessingLaser cutting, welding, polishing, painting & assembly3Lighting SourceLED Module built ... 50,000 hours quality guarantee5CertificationCE/ROHS/UL6VoltageDC 12V7Lighting DirectionFront and back lighting8Lighting ColorWhite, red, green, blue, golden etc9Design and MeasurementAccept customization ...