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GX53 5W LED Bulb Non-Dimmable - 5000K Daylight White

£899
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Knightsbridge GX53 5W LED bulb delivers 430 lumens of 5000K daylight white light through an opal diffuser. The GX53 twist-and-lock base fits flush lamp holders designed for under-cabinet lighting, surface-mounted downlights and utility task fixtures, making it a direct replacement for older GX53 halogens and CFLs.

Designed for kitchens, workshops, offices and utility spaces where clear neutral light supports detailed work, the 5000K output mimics natural midday daylight and provides high colour rendering (CRI >80) for accurate colour perception. The 120° beam angle gives even coverage without creating pools of light or dark corners in typical under-cabinet installations.

The 75mm disc measures just 26mm in height, allowing it to sit almost flush within compatible surface fittings. The polycarbonate and acrylic construction houses the LED array behind an opal diffuser that eliminates visible diodes and hotspots, producing a uniform wash of light. The bulb is non-dimmable and operates on standard 230V 50Hz mains, with an expected L70B50 lifespan of 50,000 hours (approximately 17 years at 8 hours daily use).

Specification
Diameter 75mm
Height 26mm
Construction Polycarbonate & acrylic
Finish White
IP Rating IP20
Primary Voltage 230V 50Hz
Diffuser Opal
Lamp Technology LED
Lamp Base GX53
Dimmable No
L70B50 50000
Energy Rating (Class) post 2021 SLR F
Beam Angle 120
CCT 5000K
Light Colour Cool White
Lumens 430lm
Wattage 5W
Efficacy (Light source) 93.03lm/W
CRI >80
Warranty 2 Year Guarantee
Downloads

Product Specification Sheet

Frequently Asked

Is this bulb dimmable?

No. This is a non-dimmable LED bulb designed for standard on/off switching. Pairing it with a dimmer switch may cause flickering, reduced lifespan, or failure to light.

What colour temperature is 5000K?

5000K is classified as daylight white or cool white. It produces a neutral, slightly blue-toned light similar to natural midday sunlight, making it well-suited to task lighting where colour accuracy and clarity matter.

What fixtures does this fit?

The GX53 base fits flush-mounted lamp holders typically found in under-cabinet lights, surface-mounted downlights, and utility task fixtures. The twist-and-lock mechanism secures the bulb without requiring a screw thread.

How long does this bulb last?

The L70B50 rating of 50,000 hours means the bulb will maintain at least 70% of its initial output for 50,000 hours of use. At 8 hours per day, that equates to approximately 17 years of operation before noticeable dimming occurs.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Light source

Takes standard bulbs

Takes standard GX53 bulbs, so you choose the brightness and colour to suit the room.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Knightsbridge GX53 5W LED bulb delivers 430 lumens of 5000K daylight white light through an opal diffuser. The GX53 twist-and-lock base fits flush lamp holders designed for under-cabinet lighting, surface-mounted downlights and utility task fixtures, making it a direct replacement for older GX53 halogens and CFLs.

    Designed for kitchens, workshops, offices and utility spaces where clear neutral light supports detailed work, the 5000K output mimics natural midday daylight and provides high colour rendering (CRI >80) for accurate colour perception. The 120° beam angle gives even coverage without creating pools of light or dark corners in typical under-cabinet installations.

    The 75mm disc measures just 26mm in height, allowing it to sit almost flush within compatible surface fittings. The polycarbonate and acrylic construction houses the LED array behind an opal diffuser that eliminates visible diodes and hotspots, producing a uniform wash of light. The bulb is non-dimmable and operates on standard 230V 50Hz mains, with an expected L70B50 lifespan of 50,000 hours (approximately 17 years at 8 hours daily use).

    Specification
    Diameter 75mm
    Height 26mm
    Construction Polycarbonate & acrylic
    Finish White
    IP Rating IP20
    Primary Voltage 230V 50Hz
    Diffuser Opal
    Lamp Technology LED
    Lamp Base GX53
    Dimmable No
    L70B50 50000
    Energy Rating (Class) post 2021 SLR F
    Beam Angle 120
    CCT 5000K
    Light Colour Cool White
    Lumens 430lm
    Wattage 5W
    Efficacy (Light source) 93.03lm/W
    CRI >80
    Warranty 2 Year Guarantee
    Downloads

    Product Specification Sheet

    Frequently Asked

    Is this bulb dimmable?

    No. This is a non-dimmable LED bulb designed for standard on/off switching. Pairing it with a dimmer switch may cause flickering, reduced lifespan, or failure to light.

    What colour temperature is 5000K?

    5000K is classified as daylight white or cool white. It produces a neutral, slightly blue-toned light similar to natural midday sunlight, making it well-suited to task lighting where colour accuracy and clarity matter.

    What fixtures does this fit?

    The GX53 base fits flush-mounted lamp holders typically found in under-cabinet lights, surface-mounted downlights, and utility task fixtures. The twist-and-lock mechanism secures the bulb without requiring a screw thread.

    How long does this bulb last?

    The L70B50 rating of 50,000 hours means the bulb will maintain at least 70% of its initial output for 50,000 hours of use. At 8 hours per day, that equates to approximately 17 years of operation before noticeable dimming occurs.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.