Italian to English Other Printing & Publishing

'La copertina deve avere abbondanze di 5 mm'

Can anyone please help with the translation of the Italian term Abbondanze?
We are talking about page layout, specifically for the creation of books in self-publishing - It's a sort of margin.
I found a reference to 'traps' in Adobe In Design but I'm not totally convinced is the right term to use. https://helpx.adobe.com/uk/indesign/using/trap-presets.html

Thanks!