B22 (BC) LED GLS Bulb 4.9W 470lm Non-Dimmable - Warm White 3000K

This is a standard GLS bulb, the rounded pear shape most British ceiling roses and table lamps were built around, fitted with a B22 bayonet cap that pushes in and twists a quarter turn to lock. It draws 4.9W and puts out 470lm, which the pack rates as the replacement for an old 40W filament bulb. The outer glass is opal white rather than clear, so the light leaves as a soft glow across the whole surface instead of a hard bright point, and the colour is 3000K warm white.

470lm is a gentle, comfortable output rather than a floodlight, which makes this a good fit for bedside and table lamps, hallway pendants, landing fittings and any multi-lamp fitting where two or three bulbs share the work of a room. The beam angle is 180 degrees, so light spreads across a broad half sphere instead of a narrow cone, which suits a bulb sitting inside a fabric drum shade or hanging under a pendant. At 3000K the light reads warm against cream walls, wood and brass, and sits closer to the old filament bulbs people remember than the brighter 4000K and 6500K options.

It is not dimmable, so keep it on a plain on and off switch; on a dimmer circuit a non-dimmable lamp can flicker, buzz or fail early. The energy rating is F and the rating is IP20, the normal level for dry indoor fittings. The pack prints a 10,000 hour life, says the bulb lasts up to 10 years, and quotes a colour rendering index above 80. Each unit is one boxed bulb, and the minimum order is 12 in multiples of 12, which makes re-lamping a whole house straightforward. Daylight 6500K and cool white 4000K B22 GLS bulbs sit alongside it in our wider range, as do candle and golf shapes on the same bayonet cap.

Which fittings take a B22 cap?

B22, also called bayonet or BC, is the two pin cap you push in and twist a quarter turn. Check the old bulb: two small pins on a smooth metal base means B22, while a threaded base is a screw cap.

How bright is 470lm in a real room?

It matches a traditional 40W filament bulb, so it is a comfortable level for a bedside lamp, a table lamp or one of several bulbs in a multi-lamp fitting, rather than a single main light for a large living room.

Can I put this on a dimmer switch?

No. The specification states it is not dimmable, so it should run from an ordinary on and off switch. Fitting a non-dimmable lamp to a dimmer circuit can cause flicker, buzzing or early failure.

What does 3000K warm white actually look like?

It is a soft, slightly yellow white, warmer and easier on the eye in the evening than 4000K cool white or 6500K daylight, and close to the tone of the filament bulbs it replaces.

Does the 180 degree beam angle matter?

Yes. Light spreads across a broad half sphere rather than a tight cone, so it fills a shade evenly and lights a hallway or landing without leaving a bright spot directly below.

Why is the minimum order 12?

These are sold in trade multiples, so you buy at least 12 units and then in multiples of 12. Each unit is a single boxed bulb, which suits re-lamping a whole house or a rental property in one go.