The size of a standard shrink wrap depends on the type of shrink wrap and the item being wrapped. Shrink wrap can be measured by its width, length, and gauge.
Width
To measure shrink wrap tubing, measure the circumference of the widest part of the object, add 10–15%, and divide by 2.
To measure shrink wrap bags, measure the circumference of the widest part of the object, add 10–15%, divide by 2, and then measure the length of the object.
Length
The length of a shrink wrap roll can vary. For example, a standard shrink wrap roll can be 4 meters wide and 50 meters long.