Description
This is a 4.5W LED PLD bulb on a G24q four-pin base, made as a straight swap for a 13W compact fluorescent of the same shape. It gives 660 lumens at 4000K, a cool white, and the retail pack prints a 30 year lifespan and an energy rating of D. The lamp keeps the familiar folded tube form in white, with a moulded white base carrying four flat pins, and being LED it comes on at full brightness immediately rather than warming up the way a compact fluorescent does.
G24q bases turn up in commercial and utility fittings far more often than in living rooms: recessed downlights in offices and shops, wall and bulkhead fittings in corridors and stairwells, and fixed lamps in garages, workshops and storerooms. Before you order, count the pins on the lamp you are taking out. Four pins is a G24q base and this one fits; two pins is a G24d base and it does not. The 4000K light is a neutral white with no yellow in it, which keeps labels, printed text and colour-coded cabling easy to read and suits a working space better than the softer light most homes use in the evening.
One point to settle before fitting: the pack states that this lamp is not compatible with an electronic ballast, that the existing ballast should be removed and the holder wired direct to mains, and that the installation is carried out by a qualified electrician to BS7671. It is not dimmable, so keep it on a plain switch rather than a dimmer circuit. Each box holds one bulb and the minimum order is 10, sold in multiples of 10, which suits relamping a run of fittings at once. We also list LED PLL bulbs on a 2G11 base and LED PLS bulbs on a 2G7 base in the same cool white 4000K.
Specification
| Fitting |
G24q, 4 pin |
| Shape |
PLD |
| Technology |
LED |
| Wattage |
4.5W |
| Brightness |
660lm |
| Equivalent |
13W, as stated on the pack |
| Colour temperature |
4000K, cool white |
| Dimmable |
No |
| Energy rating |
D |
| Lifespan as printed |
30 year lifespan, as printed on the pack |
| Sold as |
One bulb per box |
| Minimum order |
10, sold in multiples of 10 |
Frequently Asked
Will this fit my existing G24q lampholder?
It fits a four-pin G24q holder, but the pack states the lamp will not run on an electronic ballast, so the ballast must be removed and the holder wired direct to mains by a qualified electrician.
How do I tell a G24q base from a G24d base?
Count the pins on the lamp you are removing. Four pins is G24q and this bulb matches it; two pins is G24d, a different base, and this bulb will not seat in it.
What does 4000K cool white look like once it is running?
It is a clean neutral white with no yellow cast, brighter in feel than 2700K warm white, which makes it easy to read labels, paperwork and colour-coded wiring under it.
Can I put it on a dimmer switch?
No. The specification lists it as non-dimmable and the pack carries a non-dimmable icon, so it should run on a plain on/off switch or a standard lighting circuit.
Is an IP rating given for this bulb?
The manufacturer does not state one, so treat it as offering no protection against moisture and use it only in dry, enclosed indoor fittings.
How many do I need to buy?
Each box contains a single bulb, and the minimum order on this listing is 10 units, sold in multiples of 10, which covers a full run of fittings.