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The Haas Formula 1 team has lodged its formal appeal with the FIA over the exclusion of Romain Grosjean from the Italian Grand Prix, Autosport has learned.

Grosjean was stripped of his sixth place finish in Italy following a protest from Renault about the design of the floor he used, in a move that put Renault back ahead in the constructors' standings.

An investigation by the stewards discovered that Grosjean's car did not comply with regulations that demanded the front corners of the T-tray of the floor have a 50mm radius when viewed from below after a new interpretation of the rules in July.

The American-owned team was aware of the issue but had asked the FIA for more time to make amendments to its car because modifications were difficult to achieve during the summer break and it raced on with its existing design.

Haas then had until Thursday night to lodge its paperwork with the FIA, having made a notification of its intent to appeal on Sunday night following the Italian GP, and it has now confirmed its appeal with motorsport's governing body.

It is expected that confirmation of the appeal process, and the timing of any court hearing in Paris, will come next week.

Team principal Gunther Steiner had said after Grosjean's disqualification that he felt the decision was wrong.

"We do not agree with the Stewards' decision to penalise our race team and we feel strongly that our sixth place finish in the Italian Grand Prix should stand," he said.

