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Over 20 Years Lighting Experience UK Next Day Delivery

Integral 3.7W Cool White LED MR11

Item code: 11577

Free Standard Delivery
1 Year Guarantee


The Integral 3.7W LED MR11 is over 80% cheaper to run than its halogen 20W equivalent and boasts a long lifespan of 15,000 hours.

  • 3.7W equivalent to 20W halogen
  • Cool White (4000k) light colour
  • Average life expectancy 15,000 hours + 1 year guarantee
  • GU4 cap fitting
  • A+ energy rating
  • Size: L 40 x Dia 35mm
See Full Description

Was: £6.24 ex.VAT

Now: £4.99 ex.VAT

*Expected delivery date

Wednesday 30th May

Order by 8:00pm Tuesday 29th for delivery on Wednesday 30th May

More Info

Code Unit Price ex.VAT Stock Qty Buy

Was: £6.24 ex.VAT

Now: £4.99 ex.VAT

5 in stock


The Integral 3.7W LED MR11 saves over 80% energy as a retrofit replacement for a 20W halogen equivalent. As well, its 15,000-hour lifespan is up to five times greater than that of a 12V halogen bulb. This non-dimmable bulb is compatible with most existing transformers.

Thanks to a thermally efficient body with a plastic and die cast aluminium construction, the Integral 3.7W LED MR11 delivers a reliable performance. An anti-glare refractor ensures a comfortable, smoothly dispersed light.

Certified with an A+ energy rating, the Integral 3.7W LED MR11 uses four high-quality Nichia LEDs to emit 320 lumens of cool white 4000K (CCT) light in a 30° flood beam. This equates to a superb luminous efficacy of 86 lumens per watt, with a peak luminous intensity of 850 cd.

Cool white light is an excellent choice for task areas in the home (e.g. kitchens, utility rooms), offices, and some retail environments. It is good for accenting cool-coloured artworks or display items. Since this colour temperature does not exist in a halogen MR11, it is a specific advantage of LED technology.


Additional Information

Supplier Code 79-47-29
Brand Integral
Guarantee 1 Year
Length 40mm
Width/Dia 35mm
Bulb Shape Spotlights
Energy Rating A+
Dimmable Non-Dimmable
Cap Code GU4
Cap GU4
Watts 3.7W
Equivalent 20W
Voltage 12V
Lumens 320
Candela 850
Average Hours 15000
Beam 30°°
Beam Flood
Colour Rendering 80
Light Colour Cool White
Colour (K) 4000
Bulb Finish Diffused
Bulb Type LED
Bulb Design 35mm MR11

Delivery Information

Place your order online Monday to Saturday before 8pm, or before 2pm on 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. Your order should arrive the very next working day across most of the UK mainland.

How much does delivery in the UK cost?

Next day delivery:£2.99 when you spend over £80.00 (excl. VAT)
£5.99 when you spend under £79.99 (ex VAT)
Next day delivery – before 12pm:£8.99
Saturday or Sunday delivery: £9.99
3-5 working day:£0.00 when you spend over £80.00 (excl. VAT)
£3.99 when you spend under £79.99 (ex VAT)

Can I get free delivery?

We offer free ‘standard’ UK delivery for any order that is over £80 (excl. VAT). This takes three to five working days for delivery.

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

  • UK Mainland (except selected postcodes): next working day*
  • Highlands, and Isle of Man: 2 working days* - £2.99 (excl. VAT)
  • Scottish Islands: 2-5 working days* - £2.99 (excl. VAT)
  • Channel Islands and Northern Ireland: 2 working days - £3.99 (excl. VAT)
* 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 100% (5 reviews)

100 5 100
Integral 3.7W Cool White LED MR11
Date Score Customer Comment Our Response
28-Nov-2017 Product:
Very good quality product
28-Nov-2016 Product:
Have been great in the past. Sorry, didn't get to see these ones, they were stolen. No reflection on yourselves. Frank
22-Mar-2016 Product:
Product fine but unfortunately the body is slightly too fat to be a direct replacement for the halogen lamp I had hoped to replace.
08-Mar-2016 Product:
Great product - very bright and super cool whiteness!
12-Mar-2015 Product:
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