FLUORESCENT TUBE F18W/840 2FT T8 18W 840
T8 triphosphor fluorescent tube (18 W) emits ≈1,350 lumens of neutral 4,000 K light,
with 80 CRI, a G13 base, and a 15,000‑hour lifespan—ideal for crisp, efficient general lighting.
T8 triphosphor fluorescent tube that offers crisp, energy-efficient lighting with simple plug-and-play installation. Equipped with a G13 bi-pin base, it fits seamlessly into standard fluorescent fixtures. Emitting a neutral 4,000 Kelvin light, this tube provides bright yet comfortable illumination—ideal for offices, kitchens, workshops, retail spaces and other general-purpose areas.
Operating at 18 W, this premium-grade tube produces approximately 1,350 lumens, delivering efficient output suitable for small to medium-sized spaces. With an 80 CRI, it ensures accurate and natural colour rendering, making whites and neutral tones appear vibrant and true-to-life.
Boasting a 15,000‑hour lifespan, the tube’s triphosphor coating maintains consistent brightness and colour fidelity over its lifetime, reducing maintenance and replacement frequency.
Key Features
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Power: 18 W – efficient performance in a compact format
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Brightness: ~1,350 lumens (~75 lm/W)
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Colour Temperature: 4,000 K – neutral-white illumination
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Colour Rendering Index: 80 CRI – true-to-life colour accuracy
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Base Type: G13 bi-pin – standard for T8 fittings
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Tube Format: T8 (26 mm diameter, approx. 600 mm length)
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Lifespan: 15,000 hours – reliable long-term use
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Triphosphor Coating: Ensures stable light output and colour
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Ideal For: Offices, kitchens, workshops, retail and utility lighting
- Free delivery for all UK mainland orders over £48 inc VAT.*
- For orders under £48 inc VAT:
- For all other items delivery is charged at £3.90 inc. VAT.
- Delivery charges for batteries weighing over 1kg is £5.95 inc. VAT.
- Batteries weighing under 1kg have a delivery charge of £2.75 inc. VAT.
- All Fluorescent or LED Tubes 3ft or above in length will incur carriage at £9.50 inc. VAT.
- Light fixtures 600mm or greater are also sent by carrier and will incur carriage at £9.50 inc. VAT
- All Giant Vintage LED Lightbulbs will incur carriage at £9.50 inc VAT
Next day delivery
Next day delivery is available for all products in stock if ordered before 3pm. For more information read our delivery page.
Please note we are currently only able to deliver on Monday - Friday for next day orders.
Delivery options to Europe and Rest of the World are available. Use the shipping estimator at the checkout for prices.
We want you to have complete confidence when placing your order which is why we have a no-quibbles returns policy.
If you wish to return your items, please contact us via phone or email with the following details:
- Your contact details
- Your order number (starting 1000xxxxx)
- The reason for return
One of our customer services staff will contact you with instruction of how to proceed.
Call 01494 880099 or email sales@generallamps.com.
For further details see our guide on ordering, delivery & returns.
