Exodus 26:2

2The length of each curtain shall be twenty-eight cubits,
A  cubit was about 18 inches or 45 centimeters
and the breadth of each curtain four cubits; all the curtains shall be the same size.

Exodus 26:13

13And the extra that remains in the length of the curtains, the cubit on the one side, and the cubit on the other side, shall hang over the sides of the tabernacle, on this side and that side, to cover it.
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