E27 GLS 10W Filament LED Bulb 99W-eq 1520lm 320° - Cool White

This E27 GLS LED bulb takes the classic A60 household shape and fits a standard Edison Screw (ES) cap, so it drops straight into the same fittings as a traditional rounded bulb. American buyers will recognise the A60 as the A19 equivalent. It draws just 10W while putting out 1520 lumens at 4000K cool white, a crisp, neutral light with a CRI of Ra 80. Visible LED filaments sit behind clear transparent glass for a vintage open-bulb look, while the 320° beam angle throws light almost all the way round rather than in a single direction.

Because the light spreads through a wide 320° arc, this bulb suits open fittings where the bulb itself is on show: pendants over a kitchen island, exposed-cable lamp holders, hallway and landing fittings, and table or floor lamps with a clear or open shade. The near-omnidirectional spread fills a fitting evenly rather than casting a tight pool, so it works well where the glow needs to reach across a room or down a stairwell. The 99W incandescent equivalent means it stands in directly for an older bright household bulb at a fraction of the draw. It is rated IP20 for dry indoor use only, so keep it to interior fittings and clear of bathrooms or any exposed location.

The A60 envelope measures Ø60 by 105 mm and weighs only 34 g, running on 220 to 240V AC at an efficiency of 152 lm/W. The clear glass keeps the filament strands visible for the retro effect, and the bulb is rated for 10,000 hours of use. This is a non-dimmable bulb, so pair it with a standard on/off switch rather than a dimmer circuit. We stock this filament style across several caps and shapes in the range, including matching warm and cool white options.

Product Specification Sheet

Range Datasheet

Which fitting does this bulb need?

It has an E27 Edison Screw (ES) cap, the larger of the two common screw fittings. It screws straight into any standard E27 lamp holder, the same size used by most pendants, table lamps and ceiling fittings that take a screw bulb.

What old bulb wattage does it replace?

The bulb draws 10W but gives 1520 lumens, which matches the output of a 99W traditional incandescent bulb. You get the same bright light for roughly a tenth of the energy use.

Is this bulb dimmable?

No, this is a non-dimmable bulb. It should be run on a standard on/off switch rather than a dimmer circuit, as fitting it to a dimmer can cause flicker or shorten its life.

What does the filament design look like and what colour is the light?

It has visible LED filament strands behind clear transparent glass, giving the open vintage look of an old-style bulb. The light is 4000K cool white, a crisp neutral tone, with a CRI of Ra 80 for natural colour rendering.