90cm LED Tubes

90 cm LED tubes: the in-between size hardly anyone stocks

90 cm LED tubes are the 13W T8 format that replaces the 30W fluorescent. It is the least common length and for that very reason the most sought after: it turns up in older fittings and in installations where a 60 cm tube falls short and a 120 cm one simply will not go in. With a G13 base, the familiar bi-pin with 13 mm between pins, the 90 cm LED tube mounts straight into the existing fitting. And there is no leeway here: if your gear is 90 cm, you need exactly this size. Close enough is not good enough.

Why the length is non-negotiable

A T8 tube rests on two fixed lampholders, one at each end. The distance between them is set by the length of the tube, so there is no slack: a shorter tube will not reach the contacts and a longer one will not fit in the housing. Before ordering, measure the old tube from base to base, or the internal space in the fitting; if you get around 90 cm, this is your category.

Size, power and colour temperature

T8 means a tubular tube 26 mm in diameter, the same profile as the classic fluorescent. In this length the FactorLED power is 13W and it replaces the 30W fluorescent the original fitting carried. The available temperatures are the usual three: 3000K warm, 4000K neutral and 6000K cool. In commercial kitchens, bakeries and work areas the 4000K to 6000K range is the one used, so details stand out clearly and colours stay true.

Where the 90 cm tube turns up

• Narrow corridors and hallways where a 1.2 m fitting will not fit.
• Storerooms, basements and meter cupboards.
• Small commercial kitchens and bakeries.
• Long shop windows and retail display units.
• Older office fittings and premises refurbished section by section.
• Changing rooms, staff washrooms and cleaning cupboards.

In many of these cases the fitting was installed years ago, when 90 cm was a common size, and it still works perfectly today: changing just the tube works out better than replacing the whole unit.

How to replace a 30W fluorescent

The G13 base is the same, so the tube goes in and twists exactly like the fluorescent. What changes is inside: conventional gear carries a starter and a ballast or choke, and when moving to LED these have to be removed or bypassed depending on the tube model you choose. It is the step that raises the most questions, so it is worth opening the fitting and seeing what is in there before you buy.

What you gain is tangible: the LED lights instantly, without the warm up flicker of a tired 30W tube, contains no mercury, tolerates the constant switching of a corridor or a storeroom and lasts between 15,000 and 25,000 hours against the 8,000-10,000 hours of a fluorescent.

How to choose yours

First confirm the size with a tape measure, not from memory. Then choose the colour temperature according to use: neutral or cool in work areas, warm only if the corridor is part of a home or a customer facing space.

At FactorLED you will find the 90 cm size in stock, with a G13 base and 13W to replace your 30W fluorescent. If you have measured and are not sure which type of tube your fitting needs, tell us and we will point you in the right direction.

Frequently asked questions about 90 cm LED tubes

Can I fit a 120 cm tube if my fitting is 90 cm?

No. The distance between lampholders is fixed: a longer tube will not go in and a shorter one will not make contact.

How much power does a 90 cm LED tube use?

13W, and it is equivalent to the 30W fluorescent the original fitting carried.

How do I measure my tube to know whether it is 90 cm?

Measure the old tube end to end, including the bases, or the internal space in the fitting between lampholders.

Do I need to change the whole fitting?

Usually not. The G13 base is compatible; you only have to remove or bypass the starter and ballast depending on the model.