Pat Bauer, president of Entegra Owners Association is the guy that published that thread.
I believe it was also in the really long and involved Owners Mod thread which had hundreds and hundreds of posts. That thread used to be a sticky at the top but now has fallen down into the mass of threads. If you do a search in the search box at the top of the page with "Entegra: air vents magnets bauer"
in the search string you will find it pretty quickly.
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5Fi