This may provide ventilation for the art gallery (6)

I believe the answer is:

louvre

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'gallery' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for louvre that I've seen before include "Parisian landmark - slat" , "National art gallery of France, in Paris" , "Window slat" , "that's normally closed during the winter?" , "Type of windows and doors" .)

I've seen this clue in The Irish News.

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