No trouble attaching it to my 3M Half Mask Respirator. I wore a COVID mask beneath it just for extra protection. That made it harder to breathe. Consequently, I found myself breathing through my mouth because the nose part of the 3M mask was squeezing my nose close. Only Problem, don't know how to determine when it's time to change P-100 filters.
Verified purchase: Yes | Condition: New
I really appreciate your business as a valued customer. God bless.
Verified purchase: Yes | Condition: New
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