B22 (BC) LED Filament GLS Bulb 4.2W 320lm - Warm White 2200K

This is a B22 bayonet cap bulb with an LED filament inside a gold tinted glass envelope, so the light source is meant to be looked at rather than hidden behind a shade. The shape is GLS, the rounded pear outline of a standard household bulb, and the cap is the two pin push and twist bayonet used on most older British fittings. It draws 4.2W and gives 320 lumens at 2200K, which the pack labels vintage: a deep amber warm white well below the 2700K most warm white bulbs sit at. The pack rates it as a 30W replacement.

At 320 lumens it will not light a whole room from a single central fitting, and it is not trying to. It belongs where the bulb is on show: open pendants, bare flex drops over a kitchen island, cage fittings, and table or floor lamps whose shades leave the top of the glass uncovered. Three or four in a row give a low, evening sort of light across a worktop or a hallway rather than working light. Beside a bed or in a snug it is comfortable to look at directly, because the amber glass and the low colour temperature take the hard edge off the filament.

Both the specification and the pack mark it non dimmable, so put it on an ordinary on/off switch; on a dimmer it may flicker, buzz or simply fail early. The pack prints a 15 year lifespan, with an asterisk pointing to the back panel, and the energy label puts it in class G, which is where filament style LEDs land, since the tinted glass trades efficiency for looks. It is rated IP20, so keep it to dry indoor fittings. Each blister holds one bulb and the minimum order is ten, so order in tens. We list LED bulbs in B15 (SBC) candle and GU10 fittings as well.

Will this fit a standard British bayonet lampholder?

Yes, it has a B22 bayonet cap. Check that your old bulb has two pins on the side of a metal barrel rather than a screw thread, and that the barrel is the larger B22 size rather than the smaller B15.

Can I put it on a dimmer switch?

No. Both the specification and the pack mark this bulb non dimmable, so it needs an ordinary on/off switch. On a dimmer circuit it can flicker, hum or fail well before its rated life.

How bright is 320 lumens in practice?

The pack calls it a 30W replacement, so treat it as accent, bedside or evening light rather than the main light for a large room. Several in one fitting spread it much further.

How does 2200K compare with an ordinary warm white bulb?

It is noticeably deeper and more amber. Most warm white bulbs sit at 2700K, so this one reads golden and candle like, which suits open fittings where the filament itself is on show.

Why is an LED bulb rated energy class G?

The label compares light output against power drawn. Gold tinted glass and a filament layout give up some output for the look, so it still uses only 4.2W but scores low on that scale.

How many bulbs do I get, and how many must I order?

Each blister holds a single bulb. The minimum order on this listing is ten units in multiples of ten, so you receive ten separate blisters with one bulb in each.