Does anyone know if Honeywell air purifier pre filters are supposed to have white powder on them?
Question: I just bought the A Plus pre filter and when I unfolded it I noticed it has white powder on the entire inside surface. The box says nothing of a white powder, but it does say "deodorizes", so it might just be an odor reducer. I tried calling the company but they are
Answer: It's probably just dust from the packaging materials.
I don't think I remember seeing any on the inside of ours. It should be the activated carbon that deodorizes and I believe that is the black material.
You can see a larger picture of the prefilter at this Amazon page along with some discussion:
http://www.amazon.com/gp/product/B000050
You can see a larger picture of the prefilter at this Amazon page along with some discussion:
http://www.amazon.com/gp/product/B000050
That is until I had the chance to test out 
the technology company Honeywell Aerospace has established a division to come up with a solution. reduced environmental impact, both in terms of harmful emissions and noise. "There's a direct link between the time spent in the air burning fuel, ...
They will enable us to fly cleaner, foster job growth in a new industry, and can insulate airlines from the volatile price swings of conventional fuel to help make air travel more economical. What we need is an adequate, affordable and sustainable ...
