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

This E27 GLS LED bulb takes the classic rounded A60 household shape and lights it with visible LED filaments behind clear glass for a vintage look. It draws 10W to deliver 1520 lumens at 2700K warm white, a soft amber tone, with a wide 320 degree beam that spreads light through almost the full sphere rather than throwing it in one direction. The E27 cap is the standard Edison Screw fitting, known in the US as the medium screw base, so it twists into the same holders as a traditional screw-in bulb.

At 1520 lumens this sits comfortably as a main light in living rooms, bedrooms, hallways and dining areas, and the near all-round 320 degree spread suits open shades, pendants and exposed-bulb fittings where the filament effect is meant to be seen. The 2700K warm white tone keeps the light relaxed and easy in the evening rather than clinical, so it works well over a table or in a reading corner. The bulb is rated IP20 for dry indoor use only, so keep it out of bathrooms, porches and any damp or outdoor position.

The bulb runs on 220 to 240V AC mains and reaches 152 lm/W, giving the same brightness as a 99W old-style bulb from just 10W. Colour rendering is Ra 80, so colours look natural under it, and the rated life is 10,000 hours. It measures Ø60 by 105 mm, weighs 34g and finishes in a clear-glass filament style with white detailing. This bulb is non-dimmable, so pair it with a standard on/off switch rather than a dimmer. We stock this E27 filament shape alongside other caps and bulb forms across the range.

Product Specification Sheet

Range Datasheet

What fitting does this bulb need?

It has an E27 cap, the standard Edison Screw (ES) fitting. It twists into any holder that takes a screw-in bulb, the same base sold as a medium screw base in the US. No adapter is needed for a standard E27 fixture.

What old bulb wattage does it replace?

The LED itself draws only 10W but gives 1520 lumens, matching the brightness of a 99W traditional bulb. The low actual wattage is what saves energy, while the light output stays equivalent to the older lamp it replaces.

Is this bulb dimmable?

No, this is a non-dimmable bulb. It should be used with 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 warm white colour look like?

At 2700K it gives a warm white, soft amber light that is relaxed and inviting rather than bright and clinical. Combined with the visible filaments and clear glass, it suits open shades and exposed fittings where the vintage glow is on show.