Fan powered hepa filters self powered air filter modules have become a popular substitute for terminal air filtration units because of their flexibility and ease of installation.
Fan powered hepa filter.
If you want cleaner air in a fairly small room honeywell s dh hpa060 is the right choice.
The helmet filters air with fans and hepa filters with four hours of battery life.
Air circulation is maintained by using a lightweight forward curved fan powered by a 120v or 277v 60hz motor.
Fan filter units are stand alone units with integrated hepa filter fan and control system.
They supply purified air to cleanrooms and laboratories within the life science food and beverage and microelectronic industries by removing harmful airborne particles from recirculating air.
The mac 10 was designed and engineered by the us government in the engineering labs in new mexico as a means to deliver ultra clean air into environments where conventional fans and ducted hepa would not work.
The second is the hepa filter which honeywell suggests changing once a year.