Sylvania superia 0020310 cmi td 150wndl 4200k cool white rx7s 24 also known as cmh td and hci td cdi td lamps are compact single ended discharge lamps with a high efficiency cdi tdlamps are frequently used in shops shop windows public buildings and offices cdi tds can also be used outdoors for floodlighting and pedestrian areas this cdi td lamp is available in colours 830 and 942 colour temp 4200k cri 93 lumens 15000 average life 15000hrs packing quantity 12