t5 fluorescent light bulbs

  • T5 lamps are fluorescent lamps that are 5/8″ of an inch in diameter.
  • The “T” in lamp nomenclature represents the shape of the lamp-tubular.
  • These lamps are approximately 40% smaller than T8 lamps

Power and length

Tube diameter in 18 in (3.175 mm) Nominal length Nominal power (W)
T5 6 in, 150 mm 4
T5 9 in, 225 mm 6
T5 12 in, 300 mm 8
T5 21 in, 525 mm 13

How many lumens is a t5 bulb?

While the standard T5 and T5 HO are the same diameter and length, the 4-ft T5 is rated at 2,900 lumens, similar to the lumen per watt output of a T8 lamp. On the other hand, the 4-ft T5 HO lamp is rated as high as 5,000 lumens, offering twice the maintained light output of a T8 lamp.Sep 1, 2003