Here is an example:
Box size = 12″ x 10″ x 5″
Shrink packaging width = 12″ + 2″ + 2″ + another 10% = 17.6 or 18″ wide film.
Shrink packaging length = 10″ + 2″ + 2″ = 16″ of length
So you’ll need 18″ x 16″ = 288 square inches of shrink wrap.
Here is an example:
Box size = 12″ x 10″ x 5″
Shrink packaging width = 12″ + 2″ + 2″ + another 10% = 17.6 or 18″ wide film.
Shrink packaging length = 10″ + 2″ + 2″ = 16″ of length
So you’ll need 18″ x 16″ = 288 square inches of shrink wrap.