Energizer LED Tube Bulb G13 1200mm 18W Non-Dimmable - Cool White 4000K

This is a 4ft LED tube. It measures 1200mm end to end and carries the G13 bi-pin cap found on standard T8 fluorescent tubes, so it sits in the same pair of spring holders you already have. It draws 18W and puts out 1950 lumens at 4000K, which is a clean cool white rather than the yellower 2700K of a living room bulb. The light spreads across a 170 degree beam, so it washes a wide band of ceiling and floor instead of throwing a narrow stripe directly underneath itself.

A 4ft tube is the working length for a garage, a workshop, a loft, a garden shed, a utility room or a stock room, and 4000K is the temperature most people want in those spaces: bright enough to read a label or a measurement, neutral enough that paint colours and wiring colours still look like themselves. In a domestic kitchen it suits an above-worktop batten or a shelf light. The IP20 rating means the tube has no protection against water or dust, so keep it to dry indoor spaces.

The tube is not dimmable, so put it on a plain switch, a timer or an occupancy sensor rather than a dimmer circuit. It carries an energy rating of E, which works out at a little over 100 lumens per watt from its 18W draw. The manufacturer does not state an equivalent fluorescent wattage, so compare on the 1950 lumen figure rather than on wattage alone. Each unit is a single tube, and the minimum order is 12, sold in multiples of 12, which suits fitting out a whole run of battens at once. It sits alongside our wider range of LED lamps in cool white 4000K, including 2G11 PLL and 2G7 PLS types.

Will this fit a standard 4ft batten?

The cap is G13 bi-pin and the tube is 1200mm long, matching a standard 4ft T8 fluorescent, so it sits in the existing holders. The manufacturer does not state whether the control gear or starter needs changing, so have the existing gear checked before it goes in.

What does 4000K cool white look like in the room?

It reads as a neutral bright white, cleaner than the 2700K warm white of a living room bulb and without the blue cast of a 6500K daylight lamp. Labels, markings and paint colours stay easy to read under it.

Can it be dimmed?

No. The specification records this tube as non-dimmable, so it wants a plain on/off switch, a timer or an occupancy sensor. A dimmer circuit is not what it is built for, so plan the switching accordingly.

How much light does 18W give, and how does it spread?

1950 lumens across a 170 degree beam, so the output comes off the full 1200mm length rather than from one point. That lumen figure is the number to compare against when you are replacing an older tube.

Which fluorescent tube wattage does this replace?

The manufacturer does not state an equivalent wattage. Compare the 1950 lumen output with the tube you are taking out rather than matching watt for watt, because wattage is a poor guide across LED and fluorescent.

How many do I have to order?

Each unit is one tube and the minimum order is 12, sold in multiples of 12. That suits relamping a whole run of battens in a garage, workshop or store room in one go.