I think I have to come to the realization that the P400A mesh front panel isn't going to show up in Canada (seriously, I asked their official distributor in Canada and they simply said no !!!) ... I could buy it from Phanteks directly, but $60 for that front panel is too expensive!
So I have been digging around and found a modding thread here on the forum ;
https://linustechtips.com/main/topic/876464-modding-noob-making-p400s-front-panel-more-airflowish/
Then there's @Mnpctech method (while not for the P400S, it would totally work) ;
But, I just found out a mod someone posted on Reddit a while ago, and that looks interesting IMO ;
The IMGUR album ;
https://imgur.com/a/DxdcB#u7hn0Ng
The pictures (from the above album, in case it gets removed);
I'm now wondering if I should go all out, from the thread here, side vents are more than enough to fix the P400S ... but that full metal front panel looks badass !!!