Honeywell HRF-APP1 Aplus Pre Filter: What are Those White Spots?
What the white spots are on the Honeywell HRF-APP1 pre-filter. Instructions on how to install the pre-filter on your air filter, and the cheapest place to buy these filters.
How easy it is to make people believe a lie, and hard it is to undo that work again! - Mark Twain
What the white spots are on the Honeywell HRF-APP1 pre-filter. Instructions on how to install the pre-filter on your air filter, and the cheapest place to buy these filters.