Double sided 2835 led module for light boxes backlight illumination solution for outdoor and indoor sign cabinets and large illumination.Comes in lightweight,easy to install rolls,Ideal for advertising backlit lighting. Model RX-BKT41X2-50018 Strip dimension 496x18x7mm LED Type SMD 2835 Power 3.8W each strip Lumen 378Lm each strip Input DC 24V LED Spacing 83mm Strip spacing 93mm High CRI 80 Long life span 50000 hrs Beam angle 160 degree Luminous efficiency 50mm Brightness 9000Lm/m2 Series connection 50pcs/Roll Color Temp. CW 6000-6500K，NW 3200-4700K，WW 2800-3200K Warranty 3 years Certification CE ROHS FCC Mainly usage Direct type backlight,advertising signs backlight,advertising light boxes