This range of fluorescent tubes from Osram are a standard T5 size. They are tubular with a diameter of 16 mm and a G5 base. These T5 fluorescent tubes have a long average lifespan of up to 24,000 hours when used with Quicktronic ECGs.
Osram T5 fluorescent lamps offer decoration and illumination in a cost efficient package. They provide excellent luminous flux maintenance throughout their entire lifespan, meaning that the bulb will not become dimmer with repeated use. They also have good colour rendering and are dimmable.
Fluorescent tubes give off a brighter light than halogen bulbs. They have low running costs and a long lifespan so no need to worry about replacements making them suitable for a number of applications. When choosing a fluorescent tube the number of lumens (Im) is important as the higher the number of lumens the brighter the bulb will be. T5 fluorescent tubes also produce high levels of colour rendering and efficacy.

Fluorescent tubes contain mercury so you most dispose of these tubes safely as per regulation.

This range includes the following Fluorescent tubes with various wattage (14W, 21W, 28W and 35W), luminosity and colour temperature:

494-6691 – FH14835, 14 W, 1200 lm, 550mm, 3500K
494-6720 - FH1484, 14 W, 1200 lm, 550mm, 4000K
494-6736- FH2184, 21 W, 1900 lm, 850mm, 4000K
494-6742 - FH2884, 28 W, 2600 lm, 1150mm, 4000K
621-7737 - FH3584S, 35 W, 3300 lm, 1450mm, 4000K
621-7743 - FH35835S, 35 W, 3300 lm, 1450mm, 3500K
700-1372- FH28830, 28 W, 2600 lm, 1150mm, 3000K
700-1378 - FH21830, 21 W, 1900 lm, 850mm, 3000K
700-1381 - FH35830, 35 W, 3300 lm, 1450mm, 3000K
Good economy and efficiency
Up to 50 % smaller by volume than comparable T8 lamps and more energy efficient
Natural colours
Very good lumen maintenance >90% throughout the life of the lamp
Long average life time
Good colour rendering
Dimmable
G5 lamp base
Energy efficiency rating class A+