E27 (ES) LED GLS Bulb 13.8W 1521lm - Daylight 6500K, 2 Pack

This is a standard pear shaped GLS bulb on an E27 screw cap, the large screw fitting used by most table lamps, pendants and standard lamps sold in the UK. It draws 13.8 watts and gives 1,521 lumens, which the retail pack rates as the equal of a conventional 100W bulb. The light is daylight white at 6,500K, the coolest and most blue leaning of the common LED colour temperatures. The bulb face is opal rather than clear, so the light spreads softly instead of showing individual diodes, and each box holds two bulbs.

Daylight at 6,500K reads as crisp and slightly blue against the yellower 2,700K most living rooms use. That makes it a working light rather than a relaxing one: good over a kitchen worktop, in a garage, a utility room, a home office or a craft table, where you want colours to read true and small print to stay legible. The 200 degree beam throws light almost the whole way round the bulb, so it suits open shades, pendants and upright standard lamps far better than it suits a tight downward reflector. If you are mixing it with existing bulbs in the same room, match the Kelvin figure or the difference will show.

This bulb is not dimmable, so wire it to a plain on and off switch; fitted to a dimmer it may flicker, buzz or fail early. The energy rating is E, and the pack prints a lamp life of 10 years. It carries an IP20 rating, meaning it is built for dry indoor fittings only. One unit is a box of two bulbs, and the minimum order is six, sold in multiples of six, which works out at twelve bulbs. It sits alongside our wider range of LED bulbs, including B15 candle and golf shapes in daylight 6500K and in warm white.

How do I know my lamp takes an E27 cap?

E27 is the larger of the two screw caps, roughly 27mm across the threaded metal base. Unscrew the old bulb and compare; the smaller 14mm screw thread is E14 and will not fit.

How bright is 1,521 lumens in practice?

It is a high output for a single household bulb and the pack rates it as the equal of an old 100W filament lamp, so one in a central pendant will light a typical kitchen or garage.

What does 6,500K daylight look like in a room?

It is a cool, slightly blue white, much crisper than the warm yellow of a 2,700K bulb. People generally prefer it for working areas and the warmer figures for sitting rooms and bedrooms.

Can I put it on a dimmer switch?

No. The specification states it is not dimmable, so it needs a plain on and off switch. On a dimmer circuit it can flicker, buzz or shorten its own life.

Can I use it in an outdoor light?

Only inside a sealed weatherproof fitting rated for the job. The bulb itself is IP20, which means it is intended for dry indoor fittings and has no protection against water.

How many bulbs will I receive?

Each box contains two bulbs. The minimum order is six boxes, sold in multiples of six, so the smallest purchase is twelve bulbs in total.