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Anonymous
The standard ones are 20 inches by 20 inches, and most are designed to fold in half.
There have been special editions and variations with slightly different board sizes.
Manley Zboncak ∙
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The size of a regulation board is 18 in. round, 1.5 in. deep. The target size is 13.5 in.
Wiki User
18 inch circumference
18 inches