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Crompton Lamps CFL 2D 38W 4-Pin Dimmable White Frosted

Sold & shipped by Lightbulbs Direct

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Crompton Lamps CFL 2D 38W 4-Pin Dimmable White Frosted
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Product details

Product information

Often referred to as 2D, DD double turn or butterfly light bulbs, these energy efficient compact fluorescent CFL light bulbs are commonly used with low profile decorative and tough exterior luminaires in both domestic and commercial applications. The unique shape of these CFL 2D light bulbs provides even light distribution, while boasting an impressive a rated life of 10,000 hours and a typical lifespan of 5 years. This Crompton 28W 4 Pin Double D light bulb emits 2,700 lumens of warm white light and is perfect for use in offices, bathrooms and stairwells. Suitable for dimming - separate ballast/control gear required. Fitted with a GR10q 4-pin square push fit base.

  • Light colour - White
  • Guarantee - 2 years
  • Suitable use type - General-purpose

Features and benefits

Estimated running cost £9.97 per year (based on 5-hours per day)

  • 2D and Circular shape CFL bulb; compatible with existing fixtures with a GR10q holder; designed for retrofit replacement of incandescent bulbs.
  • Glass Type: Frosted
  • Rated Life: 10,000 hours
  • New 2021 Energy Rating: G (A Pre-2021)
  • High colour rendering (CRi >82) provides vivid and natural light.


Cap fittingGR10q
Colour rendering index (CRI)82
Colour temperature3500K
Equivalent wattage38W
kWh per 1000hr life38kWh
Lamp lumen maintenance factor (LLMF)≥70%
Life length10000h
Light technologyCFL
Mercury content5mg
Model name/numberCLC38W4PIN
Pack quantity1
Power output38W
Product diameter195mm
Product length200mm
Switch cycles5000
Warm up time10s
Product code5018986674196