B22 (BC) LED GLS Bulb 4.2W 470lm Non-Dimmable - Warm White 2700K

This is a general service bulb, the classic pear shape, fitted with a B22 bayonet cap: the two-pin push and twist cap found on most older British pendants, table lamps and ceiling roses. It draws 4.2W and puts out 470 lumens, which the pack rates as a replacement for a 40W incandescent bulb. The outer surface is a smooth white diffuser rather than clear, so the light leaves it evenly instead of as visible bright points, and the 240 degree beam angle spreads that light sideways and upwards as well as straight down.

At 470 lumens this is a comfortable rather than a forceful light, which makes it a sensible choice for a bedside lamp, a hallway pendant, a landing fitting, or one of several lamps in a room where no single bulb has to do all the work. The 2700K colour is warm white, the soft yellow cast of the old filament bulbs, and it sits well with wood, brick, brass and warm paint colours. If you have mixed old bulbs with new ones on the same landing, matching everything to 2700K removes the odd bulb that reads blue against the rest.

There is no dimming here: the pack marks it non-dimmable, so put it on an ordinary switch. Wired to a dimmer it can flicker, buzz or fail early, so where a dimmer is already in the circuit choose a bulb sold as dimmable instead. The energy rating is E, and the pack prints a 15,000 hour lifespan, which it expresses as 15 years. The rating is IP20, meaning no protection against water, so keep it to dry indoor fittings. Each unit is one boxed bulb, and the minimum order is 12, sold in multiples of 12. We also list B15 (SBC) LED candle and golf bulbs at the same 4.2W and 470lm in warm white 2700K.

Will a B22 cap fit my lamp?

B22 is the bayonet cap with two small pins on the side that you push in and twist a quarter turn. Take the old bulb out and check: if it screws in, you need an E27 instead.

Can I put this on a dimmer switch?

No. It is non-dimmable, so it belongs on a plain on and off switch. On a dimmer circuit it may flicker, hum or fail well before the rated hours, whatever the dimmer is set to.

How bright is 470 lumens in practice?

The pack rates it as a 40W replacement, so it suits a bedside lamp, a hallway pendant or a multi-lamp fitting rather than lighting a large living room from a single ceiling point.

What does 2700K warm white actually look like?

It is the soft yellow-toned light of a traditional filament bulb, easy in the evening and kind to warm colours. Cool white at 4000K and daylight at 6500K both read noticeably whiter.

Why does the minimum order say 12?

These are supplied on trade terms, so the smallest order is 12 units in multiples of 12. Each unit is one boxed bulb, so an order of 12 gives you 12 separate bulbs.