I think the concern is more about stacking multiple boxes and the combined weight of everything pushing down on the bottom box. 2-3 pizzas is probably fine without, but when you get a large order for a party or school or event with 5 stacks of ten pizzas each the weight becomes a problem.
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I think the concern is more about stacking multiple boxes and the combined weight of everything pushing down on the bottom box. 2-3 pizzas is probably fine without, but when you get a large order for a party or school or event with 5 stacks of ten pizzas each the weight becomes a problem.
Source: former Pizza shop employe/mgr