that can be a problem. i would suggest if you use these masks, to also have a few rolls of duct tape and a roll of plastic sheeting to cover the windows and doors of your house. these masks aren't meant for long term. you need to take it off to change filters, and you need a safe place to do that.I need to yield to Lowdown3 on this one but I believe the M10 mask was a close copy of the US M17 cheek filter mask. The eastern block made these masks just a hair off of the US mask so they could use our filters but we could not use theirs. The biggest problem with the Mask is you have to remove it from your head to change the two filters inside the cheeks of the mask.
filters are hard to find.Well I bought a few of the masks the other day for my family and started looking into picking up extra filter but IM kind of having trouble finding them anywhere
Any ideas or links to where I might be able top find them?