McHappy_Pants.
The STM is a Quebec public company and must publish in a local newspaper any contracts> $ 100 000
So, no publication = No interseting $$
We do not know this contract value because the amount is probably insignificant (around $ 25,000).
Also, if you take the Montreal metro, you'll not see any air conditioning ; Therefore no filter.
The new metro will not have A/C either
https://www.cyberpresse.ca/actualites/regional/montreal/201008/31/01-4311436-pas-question-de-climatiser-le-metro-dit-la-stm.php
As usual, Bolduc signed/offered filters to test the Noveko product but still no action and no $$ at the end.
Very good seller to offer free sausages in a supermarket.