Detail of led letters Main material:, front: silicone , side: grade , high quality acrylic/plexiglass , inside: waterproof led strips , back: pvc/aluminum composite/galvanized sheet/stainless steel Dimension:, customized design Color:, customized from pantone color,  by spray-painted, powder coat etc. Transformer:, output: 12v , input: 110v-240v,   Illuminate:, high bright light,   Light,  source:, led modules/exposed led/led strips Warranty:, 3 years for led, 10 years for lettering Oem,  service:, accepted Average lifetime:, ,  100000hrs Certification:, ccc, ce, ul, rohs Application:, shops/hospital/companies/hotels/restaurants/etc.