Fluorescent lamp TL5 21 Watt 840 - Philips (Housewares)
After my old fluorescent lamp had (Osram) given up the ghost, I looked around at the local trade to spare. The prices for this were for my taste, but clearly too high: Obi: 18.69 Hornbach: 10 The Philips replaces the old lamp 1: 1, makes a good light