B22 LED Opal GLS Bulb 4.2W 470lm Non-Dimmable - Warm White 2700K

This is a 4.2W LED GLS bulb with a B22 bayonet cap, the standard push and twist fitting on most British pendants, ceiling roses and table lamps. GLS is the classic household bulb shape, gently pear sided with a rounded top, and the opal body spreads light across its whole surface rather than pushing a bright point through a thin shade. It gives 470 lumens at 2700K, a warm white close to the tone an old 40W incandescent gave. The pack rates it as a 40W replacement, which matches that lumen figure for general room lighting.

A warm white at this brightness suits the places you sit rather than the places you work: a hallway pendant, a bedside lamp, a pair of table lamps in a sitting room, or a shaded ceiling fitting in a bedroom. At 470 lumens it reads as a gentle, comfortable level of light, so in a larger room it works better as one of two or three sources than as the only bulb overhead. The diffused finish also helps where the bulb sits below eye level in an open shade, because there is no hard filament point to catch the eye.

Check the old bulb before you order. B22 has two small pins on the side of a smooth metal cap and locks in with a push and a quarter turn, while an E27 screws in and will not fit this holder. The specification lists this bulb as non-dimmable, so pair it with an ordinary on and off switch rather than a dimmer circuit. The pack prints a 15,000 hour lifespan, and the energy rating is E. Each box holds one bulb, and the minimum order is 12, sold in multiples of 12. We also list B15 (SBC) LED candle bulbs at 4.2W and 7.3W.

Will this fit my existing bayonet lamp holder?

Yes, if the holder takes a B22 bayonet cap. Look for a smooth metal cap with two small pins on the side that locks with a quarter turn.

How bright is 470 lumens in everyday use?

It is a comfortable domestic level, in line with an old 40W incandescent. Good for bedside and table lamps, and better in pairs for a larger sitting room.

Can I use it on a dimmer switch?

No. The specification lists this bulb as non-dimmable, so run it from a standard on and off switch or a smart plug instead of a dimmer circuit.

What does 2700K warm white actually look like?

A soft, slightly yellow light rather than a crisp white. It flatters warm paint, wood and fabric, and suits evening rooms where you want to relax.

Is an IP rating given for this bulb?

The manufacturer does not state one, so treat it as an ordinary indoor bulb for dry interior fittings and do not use it in an exposed outdoor position.

How many bulbs do I receive?

Each box contains a single bulb. The minimum order on this listing is 12 boxes, sold in multiples of 12, so you receive 12 bulbs.