Multi Package Dims Automatic

We have several items that are boxed up during production/packaging that get pulled and shipped directly in the box & box size does not change. It would be extremely helpful to have automation rules or product specific rules that allow you to set dims on a particular item to always populate even when there is multiple items on a shipment. It is painful to have to fill the dims in on each package when they are the same and a customer orders 4-5 items with specific package dims.