2G11 LED PLL Bulb 18W 2250lm Non-Dimmable - Cool White 4000K

This is a 2G11 LED PLL lamp, the four pin linear format that stands in for the twin tube compact fluorescent lamps used in bulkheads and slimline fittings. It draws 18W and gives 2250lm at 4000K cool white, and the retail pack states it as a replacement for a 36W PLL tube. The body is a pair of parallel frosted tubes joined at the top and finished in white, with a flat four pin base at the bottom. Being LED, it comes on at full output straight away, without the slow warm up an ageing fluorescent tube goes through.

PLL lamps do a lot of quiet work in buildings, so this one will most often be going into a linear bulkhead, a stairwell or corridor fitting, a garage, a workshop or a utility room, or the strip fittings built into older kitchen pelmets and display cases. At 4000K the light reads neutral rather than yellow, which keeps colours honest when you are reading labels, sorting tools or working at a bench. If the rest of the building already runs on 4000K tubes, this will sit alongside them rather than looking warmer.

There is no dimming here: the specification records it as non dimmable, so put it on a plain switch rather than a dimmer circuit. The pack carries a compatibility warning about electronic ballasts, so check what control gear sits inside your fitting before you order, because retrofit PLL lamps of this kind are normally wired to run on the mains supply. The pack prints a 30,000 hour life, and the energy rating is E. Each unit is one bulb, with a minimum order of 10, sold in multiples of 10. We stock the same 2G11 LED PLL lamp in 8W, 12W, 20W and 24W, all in cool white 4000K.

What does 2G11 mean, and will my fitting take one?

2G11 is the four pin flat base used on PLL twin tube lamps. Pull the old lamp out and count the pins: four in a flat row, in two pairs, means 2G11.

Will it work with the ballast already in my fitting?

Check first. The pack carries a warning about electronic ballasts, and retrofit lamps of this kind are normally wired to the mains supply, so have an electrician confirm what control gear your fitting uses.

What is it bright enough to replace?

It produces 2250lm on 18W, and the pack states it as a replacement for a 36W PLL fluorescent tube, so expect a similar level of light from the same fitting.

Can I put it on a dimmer?

No. The specification records this lamp as non dimmable, so it needs a plain on and off switch. On a dimmer circuit it may flicker, buzz or fail early.

How does 4000K cool white look in the room?

Neutral and clean, sitting between the yellow of 2700K and the blue cast of 6500K. It suits work areas, corridors and storage spaces where you want to see detail clearly.

Is an IP rating given for this lamp?

The manufacturer does not state an IP rating for the lamp itself. The fitting it goes into carries its own rating, and that is the figure that governs where it may be installed.