AUDIO PITCH DIRECTSHOW FILTER

Permanent Furnace Air Filters

air filters


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


(air filter) a filter that removes dust from the air that passes through it


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.


(Air filter) a device for removing particulate matter from an airstream.

permanent


not capable of being reversed or returned to the original condition; "permanent brain damage"


Lasting or continuing without interruption


Lasting or intended to last or remain unchanged indefinitely


continuing or enduring without marked change in status or condition or place; "permanent secretary to the president"; "permanent address"; "literature of permanent value"


permanent wave: a series of waves in the hair made by applying heat and chemicals

furnace


an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.


A furnace is a device used for heating. The name derives from Latin fornax, oven. The earliest furnace was excavated at Balakot, a site of the Indus Valley Civilization, dating back to its mature phase (c. 2500-1900 BC). The furnace was most likely used for the manufacturing of ceramic objects.


Furnace is the first album released by the industrial music group Download. It was one of the first albums released with a lenticular cover. Their follow-up EP Microscopic also made use of this new type of packaging.


An enclosed structure in which material can be heated to very high temperatures, e.g., for smelting metals


Used to describe a very hot place


An appliance fired by gas, oil, or wood in which air or water is heated to be circulated throughout a building in a heating system