Agrobrite     2' T5 Replacement 6400K Tubes, 24W, case of 20
Agrobrite 2' T5 Replacement 6400K Tubes, 24W, case of 20 at HorticultureSource.com -
20 tubes per pack T5 2' Replacement 6400K Tubes, 24W Hydrofarm's T5 replacement tubes offer HO light at a great price. Full daylight 6400K spectrum and compatible for all T5 fixtures we offer. 54W puts out 5000 initial lumens per tube, 24W puts out 2000 initial lumens per tube.