What’s is the consequence of trimming too much of a wood door?

by Notts90   Last Updated October 19, 2019 21:21 PM - source

I’d like to have all matching doors downstairs in our house (link), but one of our door frames is shorter than all the others. The doors say the maximum you can trim off any given side is 5 mm, but I need to trim 12 mm off both top and bottom to get this particular one to fit. To my knowledge, this door only comes in one size.

What would be the consequence of trimming the extra 7 mm be and is there anything I can do to mitigate it?

Photo of top of the door

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