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Over 20 Years Lighting Experience UK Next Day Delivery

Kosnic 18W Cool White LED 4 Pin DD Bulb

Item code: 10832

2 Year Guarantee


The Kosnic 18W LED 4 Pin GR10Q Lamp is a direct replacement for a fluorescent 2D low-energy equivalent, offering over 50% in energy savings and a 30,000 hour lifespan.

  • A+ energy rating
  • 18W = 38W compact fluorescent
  • GR10q cap fitting
  • Cool White, 4000k
  • 30,000 hours average life expectancy
  • 3 year guarantee
  • Emergency conversion pack available to purchase separately
  • Size: L 192 x W 192mm
See Full Description

Was: £18.99 ex.VAT

Now: £14.43 ex.VAT

*Expected delivery date

Tuesday 24th September

Order by 7:45pm Today for delivery on Tuesday 24th September

More Info

Code Unit Price ex.VAT Stock Qty Buy

Was: £18.99 ex.VAT

Now: £14.43 ex.VAT

7 in stock


The non-dimmable Kosnic 18W LED 4 Pin GR10Q Lamp is designed as a direct replacement for a 2D low-energy fluorescent lamp. It offers over 50% in energy savings against fluorescent technology, and lasts 3 times longer with a phenomenal 30,000 hour lifespan (measured at 80% of original output).

Installation Videos

If you are looking to replace an electronic ballast or a choke-style ballast with starter, we have 2 installation videos to guide you step by step.

To replace an electronic ballast watch the following video:

To replace a choke-style ballast with starter watch the following video

Other advantages of the Kosnic 18W LED 4 Pin GR10Q Lamp over fluorescent equivalents include: instant full-power start, negligible UV or IR output (less likely to attract insects or cause fading), zero mercury content, reliable low-temperature performance (down to -20°C), shock-proof and vibration-proof.

The Kosnic 18W LED 4 Pin GR10Q Lamp emits 1500 lumens of 4000K cool white light in a 120° beam. It is equal in output to a 38W fluorescent low-energy DD bulb, and has a 130 lux measurement at 2 metres. Luminous intensity is 520 candelas.

When installing this lamp into a regular fluorescent fitting with a magnetic ballast, the starter should be removed beforehand. With a high-frequency electronic fitting, the ballast needs to be completely bypassed.

The energy-efficiency and long lifespan of the Kosnic 18W LED 4 Pin GR10Q Lamp will reduce running and maintenance costs considerably, and bring a return to any investment.


The dimensions of the Kosnic 18W LED 4 Pin GR10Q Lamp are:

  • Length: 192mm
  • Width: 192mm


Additional Information

Supplier Code KLED18STD/4P-W40
Brand Kosnic
Guarantee 2 Years
Length 192mm
Width/Dia 192mm
Type Light Bulb
Bulb Shape 2D & Double Ds
Energy Rating A
Dimmable Non-Dimmable
Cap Code GR10q
Cap 4 Pin
Watts 18W
Equivalent 38W
Voltage 240V
Lumens 1410
Average Hours 30000
Light Colour Cool White
Colour (K) 4000
Bulb Finish Diffused
Bulb Type LED

Delivery Information

Place your order online Monday to Thursday before 7:45pm, before 3:45pm on Friday, or 1:45pm on a Sunday, and subject to availability*, it will be picked, checked, packed and dispatched within minutes. Once your order is on its way, you’ll receive regular updates on its progress, together with tracking information allowing you to monitor where it is on its journey.

How much does delivery in the UK cost?

3-5 day:£0.00 when you spend over £50.00 (excl. VAT)
£3.99 when you spend under £49.99 (ex VAT)
1-2 day:£5.99

Can I get free delivery?

We offer free ‘standard’ delivery to UK Mainland (except selected postcodes) for any order that is over £50 (excl. VAT). This takes three to five working days for delivery.

How does it work for ‘Highlands and Islands’ or overseas deliveries?

* Some products are not available for immediate dispatch. See product page for details. To read more about our delivery service, zones and special rates, visit our delivery page.
Feefo Reviews

Feefo Reviews - Average 90% (3 reviews)

90 3 100
Kosnic 18W Cool White LED 4 Pin DD Bulb
Date Score Customer Comment Our Response
25-Jan-2018 Product:
Service was excellent, delivered quite quickly. However, this is not a 'direct' replacement for the fitting I have, quite extensive modifications were needed, the complete removal of all ballast and changes to connection. But the end product is very satisfactory, good strong white light which is exactly...Read more
06-Mar-2015 Product:
Great product
27-Mar-2014 Product:
Thank you!!
Read more reviews on Feefo

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