How Critical is This Damage on a New Heater Radiator?

Hello everyone,

This is my first time replacing a heater radiator/matrix in my car, so I’m not very experienced in this area. I ordered a new heater radiator from Amazon, but it arrived damaged. I thought it was just bad luck, so I ordered another one, but it came with the same type of damage.

I’m starting to wonder if this kind of damage is common or if I’m missing something here. How critical is this kind of damage? Could it affect the heater’s effectiveness, or should I return it and look for a more reliable seller?

I’d appreciate any advice or insight from those who’ve dealt with similar issues. Thanks in advance!