I’ve never been able to wear googles, as no matter how good they are they always fog up .I'm wondering if the powered respirator mask that Tom discussed and a pair of over the glasses ski goggles might be effective. They usually have a closed cell foam that seals pretty good around the face and some ventilation which keeps them from fogging. If you have goggles that are pretty effective but for the fogging, there are some suggestions for controlling fogging on a website found at https://dualsportalchemy.com/tip-keeping-your-goggles-fog-free. If you get a pair of over the goggle classes, they would allow you to use anything from your cheaters to regular glasses. I hope this can help give you some relief.
Just sayin', Rick...I have a pretty fat head , so fitting is a concern . I am actually disappointed with my new Apple XS phone with facial recognition. My co-worker held a basket ball up to it , and it unlocked
i dont know why i didnt see it before but this guy puts the filter in front of the fan, i guess for testing. every other time i have seen this setup its with the filter is strapped to the back of the fan. i didnt want anyone to see lab coat guy and think thats how its used.
I wonder what merv is comparable to a hepa filter ?i called filterbuy.com and they said a merv 13 is more for hospitals and commercial systems and will restrict the air flow the way im using it. they suggested that a merv 11 wont effect it at all and still do a great job on a dusty shop. so that would be the better choice on a box fan set up.
Could hardly imagine the restriction. But it would sure be a bonus Kung health wise .Merv 17 is comparable to HEPA