I’ve seen This fan (ldo DF5015H05S) mentioned as a replacement, 4.4 cfm @5000 rpm, supposedly faster than the stock fan. Having a really hard time finding a Canadian supplier (assuming from the .ca in your original post). Found a Post on the prusa forum also suggesting good results from a fystec fan, this links to an aliexpress page but have seen on eBay and Amazon.

First link is to kb-3d which I’ve have good experience with in the past for some mods.