Knightsbridge IP20 20W T4 Fluorescent Fitting with Tube, Switch and Diffuser 4000K : Amazon.co.uk: Lighting
TRUBICE T4, T5, T8
Fluorescent Tube Light Bulbs T4 Bulb Shape Code 20 W for sale | eBay
T4 Fluorescent Tubes – The Lamp Company
Knightsbridge T4 20W Slimline Under Cabinet Fluorescent Light Fitting Unit - Includes 4000K Tube, 2m Lead and Fixings : Amazon.co.uk: Electronics & Photo
Lampe fluorescente T4, 552 mm, 20 W, G5, 840, blanc neutre, 4 000 K. : Amazon.fr: Luminaires et Éclairage