2G11 LED PLL Bulb 24W 3200lm Non-Dimmable - Cool White 4000K

This is a 24W LED PLL lamp on a 2G11 four pin cap, the long twin tube shape used in the slimline fittings that were originally built around compact fluorescent lamps. It gives 3200 lumens at 4000K, a cool white that reads clean and slightly blue next to the yellower 3000K lamps, and the two tubes sit side by side on a flat white base so the output spreads along the length of the fitting rather than coming from one point.

Slim linear housings like these turn up in offices, corridors, stairwells, garages, workshops and utility rooms, usually behind a diffuser in a surface mounted or wall mounted body. Cool white at this brightness suits places where the job is to see clearly rather than to settle in: a workbench, a stock room, a reception desk, a hallway that gets used at all hours. If you are relighting a run of several fittings, it is worth doing them in one go, because a fresh lamp beside an older fluorescent tube will look noticeably whiter and brighter than its neighbour.

The retail pack gives this as a replacement for a 55W lamp, so the drop in load is the main gain, and the pack prints a 30 year life. It is not dimmable, so pair it with a plain switched circuit rather than a dimmer plate. The manufacturer does not state whether the lamp runs on existing control gear or needs the ballast bypassed, so have an electrician check one fitting before you order in quantity. One lamp comes in each box, with a minimum order of 10 and multiples of 10 after that. Our 2G11 LED PLL lamps also run at 8W, 12W, 18W and 20W, all in cool white 4000K, if the fitting you are matching takes a shorter tube.

Will this fit my existing 2G11 fitting?

It takes the same 2G11 four pin cap as a compact fluorescent PLL lamp, with the pins in two pairs on one end. The manufacturer does not state an overall length, so measure the lamp you are taking out before you order.

Does the old ballast need removing?

The manufacturer does not say whether the lamp runs on existing control gear or needs the ballast bypassed, so we cannot tell you either way. Ask a qualified electrician to open one fitting and confirm before you commit to a batch.

How bright is 3200 lumens in a fitting like this?

The pack rates it as a replacement for a 55W compact fluorescent lamp, so in a diffused linear housing it should give you the light level you had before the old tube began to fade.

What does 4000K cool white actually look like?

It is a neutral white with no yellow cast, brighter and crisper than the 2700K and 3000K lamps used in living rooms, and closer to the light most offices and workshops already run.

Can I put it on a dimmer?

No. The pack states that the lamp is not dimmable, so it needs a plain on and off switch. Fitting it to a dimmer circuit can cause flicker, buzzing or early failure.

Is an IP rating given for this lamp?

No IP rating is stated by the manufacturer on either the specification or the pack, so we cannot claim any protection against moisture or dust. Plan on dry indoor fittings only.