Infographic: What is an LED high bay (UFO)?

An LED high bay is a powerful luminaire for spaces with a high ceiling, such as warehouses, production halls, workshops and sports halls. Because of its shape, the round version is also known as a UFO. A high bay is usually mounted from a height of approx. 6 metres and lights a large floor area from there.

Warehouse with high ceiling lighting
High bays light high spaces such as warehouses evenly.

What do you use a high bay for?

  • warehouses and distribution centres,
  • production halls and workshops,
  • sports halls and indoor riding arenas,
  • showrooms, garden centres and DIY stores with high ceilings.

Which wattage for which height?

Mounting heightWattage (guide)
4 to 6 metresapprox. 100 W
6 to 8 metresapprox. 150 W
8 to 10 metresapprox. 200 W
10 metres and higher240 W or more

The right number of luminaires depends on the floor area, the desired lux level and the beam angle. A lighting plan gives the best result.

UFO or linear high bay?

A round UFO high bay spreads light all around and is ideal for open halls. A linear high bay gives an elongated light pattern and is better suited to narrow aisles between high racking.

Benefits compared with old hall lighting

Compared with metal halide or sodium lamps, an LED high bay often uses 50 to 70% less electricity, gives full light instantly and lasts much longer. Many models are dimmable or can be fitted with a motion or daylight sensor.

View our range of LED high bay lighting.

Frequently asked questions

Why is a high bay also called a UFO?

Because of its round, flat shape, which resembles a flying saucer.

From what height do you use a high bay?

Usually from approx. 5 to 6 metres. With lower ceilings, LED panels or linear lighting are often more suitable.

Can a high bay be dimmed?

Many models are dimmable via 1-10V, 0-10V or DALI. Check this in the product specifications.