A device for filtering particles of dust, soot, etc., from the air passing through it, esp. one protecting the air inlet of an internal combustion engine
A particulate air filter is a device composed of fibrous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air.
a filter that removes dust from the air that passes through it
(air filters) Adhesive filters made of metal or various fibers that are coated with an adhesive liquid to which particles of lint and dust adhere. These filters will remove as much as 90% of the dirt if they do not become clogged. The more common filters are of the throwaway or disposable type.
actinium: a radioactive element of the actinide series; found in uranium ores
The chemical element actinium
alternating current: an electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second"
.ac is the Internet country code top-level domain (ccTLD) for Ascension Island. It is administered by NIC.AC, a subsidiary of the Internet Computer Bureau based in the United Kingdom.
HEPA/Carbon Combo Filter for Pace ARM-EVAC 105
This HEPA filter removes contaminants as small as 0.01 micron. This makes it ideal for removing irritating particles that contribute to allergies and asthma. The Clean Air Replacement filter is made of a closely pleated sheets of waterproof, all-glass filter media. In addition, the carbon loaded section removes odors at the same time. The filter is housed in a plastic case. Frame joints and media are sealed to sides and bottoms of the case with urethane for a completely leak-tight fit. The filter assembly is stable at temperatures up to 200°F. A Clean Air Replacement Filter used in the PACE ARM-EVAC 105 fume extraction unit is rated by the DOP test at an efficiency of 99.97% for a particle size of 0.3 micron. Combination HEPA/Carbon Filter. NOTE: Not affiliated with Pace Worldwide, all use and references of Pace and Pace Worldwide model numbers are property of Pace Worldwide.
89% (15)
AC filter ad, 1970
Car in dust to rear appears to be 1969 or 1970 Pontiac Grand Prix judging by the roofline, following what appears to be a 1970 Chevy Monte Carlo in front by looking at the sheetmetal.
Red Dot-HVAC air filter inspection
If your fresh air filter is dirty enough that you can't shine a flashlight through it, it probably won't allow the air flow you need for your HVAC system to be effective.