Led panel 1.7mts 11.100lm 64w 4.000k intermediary velum. 220-240ac, 50 / 60hz, extensive optics with 120º opening. energy class a ++ jrc 90 made of aluminum, structure color black ral 9005g. caution: this screen can only be installed by an authorized professional installer. in case of doubt, contact yamid.narvaez@velum.biz. important: this screen is intended for a chain installation, neither at the beginning or at the end of the chain, but in intermediate position.