| 9 Subject to there being no variation in the general design, speed and flight of the shuttle, modifications in the a bove specification may be made with the approval of the Member Association concerned, in places where atmospheric conditions due to either altitude or climate make the standard shuttle unsuitable | However, the strings may extend into an area which otherwise would be the throat, provided that the width of the extended stringed area does not exceed 35 mm and provided that the overall length of the stringed area does not then exceed 330 mm |
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| 2 Shall not exceed 280 mm in overall length and 220 mm in overall width |
The International Badminton Federation shall rule on any question of whether any racket, shuttle or equipment or any prototype used in the playing of badminton complies with the specifications.