Old 10-24-07, 02:44 PM
  #4  
Sci-Fi
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If you never used a respirator before, then buy that model to try it out for light exercise. It's more of a dust mask with an exhale valve than anything else and a less expensive dust or surgical mask would work just as well. And the air you breathe through the mask will be warm to hot, plus some people may feel bothered with the slight extra effort in breathing.

The 3M 6000 Series half mask (or most brands of half mask respirators) with replaceable cartridges is better, filters out more stuff, and is easier to breathe with. Plus you can buy a variety of different filters for different environmental conditions to make the mask more versatile.
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