GU10 LED Frosted Bulb 3.6W 345lm Dimmable - Warm White 3000K

A 3.6W GU10 LED spot with a frosted lens and a solid white body, this bulb puts out 345 lumens at 3000K. Its pack rates it as a replacement for a 50W halogen spot, so the light output lands where most people remember their old downlights sitting. The frosting matters more than it sounds: instead of the hard bright chip you see when you glance up at a clear-lensed LED, the lens spreads the source across its whole face, which softens the glare in a ceiling you walk under every day.

GU10 is the twist-and-lock cap used in most UK downlights, spot bars and track heads, so if the old bulb had two stubby pins on the back rather than a screw thread or a bayonet, this is the one you want. The 36 degree beam is a narrow cone, tighter than a general room-filling bulb, which makes it useful over a worktop, along a run of kitchen units, on a picture or a set of shelves, or in a hallway where you want pools of light rather than an even wash. In an open plan room, several at 3000K give the same yellow-leaning warmth as the halogens they stand in for.

It dims, and the retail pack carries the dimmable mark. Use a trailing edge dimmer rated for LED loads and check its minimum load, because a few 3.6W bulbs add up to very little and an old halogen-era dimmer can flicker below its floor. The energy class is E, and the pack prints a 15 year lifespan, quoted there as 15,000 hours. It is rated IP20, for dry indoor positions. One box holds a single bulb and the minimum order is 12, sold in multiples of 12. If you are not dimming, the same 3.6W 345lm 3000K GU10 is on sale here in a non-dimmable version.

Will it fit my existing GU10 downlights?

GU10 is the twist and lock cap on most UK mains voltage downlights, spot bars and track heads. Line the two pins up with the slots, push gently and turn a quarter turn. If the old bulb had a screw thread, a bayonet cap or two thin round pins, it is not a GU10.

What wattage of halogen does this replace?

The pack rates the 3.6W bulb as a 50W halogen replacement, so in a ceiling spot or a track head it gives light of the same order as the halogen coming out, on a fraction of the power.

Which dimmer switch should I use with it?

Use a trailing edge dimmer rated for LED loads, and check its minimum load figure. Several 3.6W bulbs together draw very little, and an older dimmer built for halogen can buzz or flicker when the total load falls below what it needs.

What does 3000K warm white actually look like?

It is a soft warm white, slightly cleaner and brighter in tone than a 2700K filament bulb, and well away from the bluish crispness of 4000K. It suits kitchens, living rooms and hallways where you want warmth without yellowness.

How many bulbs will I receive?

Each box holds one bulb. The minimum order is 12 and they are sold in multiples of 12, so one order covers twelve fittings, which is usually about right for a ceiling of spots plus a spare or two.