A company produces packets of soap powder labeled "giant size 32oz" The actual weight of soap powder in such a box

A company produces packets of soap powder labeled "giant size 32oz" The actual weight of soap powder in such a box

has a Normal distribution with a mean of 33oz and a standard deviation of 0.8oz. To avoid dissatisfied customers, a box of soap is considered underweight if it weighs less than 32oz. To avoid losing money, the top 5% (heaviest 5%) is labeled overweight.

How heavy does a box have to be in order for the box to be labeled overweight?