This is product manufacturers code LL20T4 by Leyton Lighting. If you need to contact us about this product, please quote our product reference of 1482.
This is a 20w T4 tube that is 578mm long including the pins at each end. It is used in under cupboard lights and some illuminated mirrors.
The 20w bulb is 568mm long excluding pins and 578mm long including pins. The manufacturer specifies a tolerance of +/- 2mm for these tubes.
These tubes from Leyton Lighting have plastic end caps that can be removed. This makes the tube slightly shorter which can help with installation into some brands of light fitting.
We have also been informed of a 580mm (inc pins) tube by Eterna - we don't currently stock this tube and we don't believe this product we sell is compatible despite only 2mm difference in tube length.
Please note: When buying T4 lamps, it is important to purchase lamps from the same manufacturer as the light fitting that you have or at least check the size very carefully. T4 lamps vary between manufacturers in tube length and cap style, so are unlikely to fit other manufacturers fittings.
Leyton Lighting T4 lamps are retrofit for Eterna and CEF Tamlite tubes available at Wickes, Wilkinson (Wilko), and B&Q.