13W fluorescent tubes T5 (Mayfield EH9)

13watt Fluorecsent Tube Slimline T5 404mm/410mm Colour Warm White G5

The same as the ones listed here:

https://www.thelightbulb.co.uk/13watt-410mm-colour-warm-white/#&gid=1&pid=1

From the description:

These Smilight 13watt T5 16mm diameter Triphosphor fluorescent tubes with a G5 (5mm) cap, are typically used in pelmet lighting for under cabinet/under cupboard fittings. This slim tube, is most commonly found in Smilite/Diplomat/Eastfield fittings supplied for kitchens by MFI, Schreiber and Hygena. Please note, the measurement excluding pins is 404mm and including pins is 410mm. They have an energy rating of A and an average rated life of 5,000 hours. In a warm white 3000k, they create a homely, welcoming light.