The club confirmed their challenge to the decision last night and the appeal will be heard this evening.
Defender Vermaelen was ordered off shortly before half-time for bringing down Guillermo Franco inside the penalty area and faces a one-match ban
This doesn't look good: Branco goes down after Vermaelen's challenge.
. the Arsenal man is sent off .
. but manager Arsene Wenger is on hand to inform him they will be appealing against it
Arsenal were leading 1-0 and went on to win 2-0, with West Ham's Alessandro Diamanti missing the penalty which followed Vermaelen's dismissal.
A statement from the Football Association on Arsenal's website said: 'The FA has received a claim for wrongful dismissal from Arsenal defender Thomas Vermaelen.
'Vermaelen was shown a red card for denying an obvious goalscoring opportunity during Arsenal's match against West Ham United on Saturday 20 March.
'A regulatory commission will hear the claim on Tuesday 23 March.'
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