Description: 1. 304#stainless steel and acrylic as the materials, with screw for install; 2. Any fonts, different colors and sizes and styles are according to customers' requirements;  3. Inner high quality waterproof led strip( with ce & rohs  4. Long lifespan over 50000 hours guarantee, safe voltage -dc12v& 5. High light led inside, surface luminance can be high to 500-1500mcd (different colors); 6. Uniformity with the unique light absorption layer for transmission of light, refraction;  7. Ametabolic, waterproof, fireproof, corrosion resistance, no rust, no fade;  8. Wide operating temperature range under dry or humid conditions cold to - 30 degrees and hot to 60 degrees; 9. Various lamp and acrylic colors: white, blue, red, yellow, orange...(rgb color led letters with programmable controller for option); 10. Environmental protection: have no light pollution or chemical pollution; 11. Energy-saving--led as light source allows greatly reduce the power consumption. Detail of led letters Main material:front: grade 201/304/316 stainless steel, high quality acrylic/plexiglass Side: grade 201/304/316 stainless steel, high quality acrylic/plexiglass Inside: waterproof led modules 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/.