aFe Pro Guard 7
Patented Filter Technology
To address the need for extra protection
from dust and dirt with washable/reusable oil-impregnated cotton
gauze filters, aFe developed a new filtration technology so revolutionary
that we applied for and received a patent. This new filtration
technology is aptly called Pro-GUARD 7. 5 layers of progressively
finer mesh medical grade cotton gauze with micro fibers that
attract smaller and smaller particles as air passes through
is combined with 2 layers of random-porosity non-woven synthetic
polyester fabric. These 7 layer combination of cotton
gauze and non-woven polyester is sandwiched between 2 layers
of epoxy coated aluminum wire mesh.
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