Doors vs. sandbags coverage

Hi,

I found out that a door grants 10% more cover then a double row of sandbags i believe the 2nd layer does not even count at all for cover but it does help for stopping enemy bullets)

Is this normal or am i missing something?
Please help.

Thanks!



I didn't find the right solution from the Internet.



References:https://ludeon.com/forums/index.php?topic=37995.0

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