Notice happiness about shutter (9)

I believe the answer is:

deadlight

'shutter' is the definition.
(deadlight is a kind of shutter)

'notice happiness about' is the wordplay.
'notice' becomes 'ad' (short for advert).
'happiness' becomes 'delight' (I've seen this before).
'about' indicates putting letters inside.
'ad' placed inside 'delight' is 'DEADLIGHT'.

I've seen this clue in The Daily Express.

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