Item code

Kosnic 9W LED 4 Pin DD Bulb

£13.49 £11.24
In Stock

Key Features

The Kosnic 9W LED 4 Pin GR10Q Lamp is a direct replacement for a fluorescent 2D low-energy equivalent, offering around 44% in energy savings and a 30,000 hour lifespan.

  • 9W equivalent to 16W
  • Retro fit for low energy double D bulbs
  • Instant start
  • Average life 30,000 hours
  • Size: L 145 x W 145mm

Product Description

The non-dimmable Kosnic 9W LED 4 Pin GR10Q Lamp is designed as a direct replacement for a 2D low-energy fluorescent lamp. It offers around 44% in energy savings over its rival technology, and lasts 3 times longer than most fluorescent lamps with its 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

Some of the other advantages of the Kosnic 9W 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 9W LED 4 Pin GR10Q Lamp emits 900 lumens of 4000K cool white light in a 120° beam. It is equal in output to a 16W fluorescent low-energy DD bulb, and has a 68 lx measurement at 2 metres. Luminous intensity is 270 candelas.

When installing this Kosnic lamp into a standard 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 sheer longevity of the Kosnic 9W LED 4 Pin GR10Q Lamp will reduce running and maintenance costs considerably.


The dimensions of the Kosnic 9W LED 4 Pin GR10Q Lamp are:

  • Length: 145mm
  • Width: 145mm

Product Specification

More Information
Supplier Code KLED09STD/4P-W40
Brand Kosnic
Guarantee 2 Years
Length 145mm
Width/Dia 145mm
Type Light Bulb
Bulb Shape 2D & Double Ds
Energy Rating A
Dimmable Non-Dimmable
Cap Code GR10q
Cap 4 Pin
Watts 9W
Equivalent 16W
Voltage 240V
Lumens 700
Average Hours 30000
Light Colour Cool White
Colour (K) 4000
Bulb Type LED


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