This lamp from Daylight uses two bulbs. It is first and foremost intended for indoor use and 14W is the maximum recommended wattage for bulbs.
From Amazon
Daylight Company DN1530 , Integrated, 10 W, Duolamp_Floor_White , 132x53x21cm
OnBuy
The Daylight Company Duolamp Floor, Plastic, White, Integrated, 10 Watts
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