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Does anyone know if Honeywell air purifier pre filters are supposed to have white powder on them?

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


It's probably just dust from the packaging materials.

Cleaning the Honeywell Enviracaire 50250 Air Purifier Pre-filter

I don't know how "legit" it is to do this, but I had read that you could extend the life of the pre-filter by vacuuming up the dust ...

Honeywell 50150-N True HEPA Allergen Air Purifier

For more information on this product and other great products, click here: www.honeywellstore.com The Honeywell True HEPA Allergen Remover Air ...

air purifier pre filter - Bookshelf


Vegetarian Times
96 pages
Vegetarian Times

TrueAir" UV Air Purifier also uses a carbon pre-filter, which helps eliminate odors and traps large dust and hair particles before they reach the HEPA ...

Gaiam Real Goods solar living sourcebook, your complete guide to renewable energy technologies and sustainable living
564 pages
Gaiam Real Goods solar living sourcebook, your complete guide to renewable energy technologies and sustainable living

... Replacement Filter, 346 01-0137 Sun Pure Air Purifier, 352 01-0138 Sun Pure Air Purifier ... Replacement Filter, 346 01-8005 Healthmate HEPA Air Filter, ...

Greener Cleaner Indoor Air: A Guide to Healthier Living
498 pages
Greener Cleaner Indoor Air: A Guide to Healthier Living

Most portable air purifiers will provide a prefilter for larger dust particles, a carbon filter for odors, and a high-efficiency HEPA filter for fine ...

Solar living source book Solar living source book

Step One: A treated pre-filter removes larger particles like dust (.5 microns ... The Ultraviolet Air Purifier measures 18" H x 21.5" W x 8" D,and boasts a ...