As I munched on my morning yoghurt pot full of goodness in Pret, I spotted an air curtain doing the job it is supposed to be doing.
At first, the skeptic in me took one look at the door propped open with the wet floor sign and thought: ' yet another waste of energy by having an air curtain that either doesn't work or is switched off'.
However, upon closer inspection I could see people's hair blowing under the fan as they entered the store to my utter delight - 'yes!' I thought. At last, an air curtain doing its job and doing it so wonderfully!
There is hope.
What a pleasant surprise.
Spotted any air curtains recently that are actually working to create a barrier of air?
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