In-Duct Media Air Purifiers
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M-18, M-22, M1-1814, M1-2214 Commonly referred to as "Furnace Mounted Media Air Cleaners", these units are adaptable to a wide range of furnace configurations. Installed in line with the furnace air intake, the media filters remove pollutants prior to going through the heating or cooling stage of the furnace/air conditioner. In effect, these units filter the entire house. These units are easily mounted in any position on a forced air system and can be sized to a variety of duct openings. With a decrease in dust, greasy build-up, tobacco stains and overall dirt in your household, these air purifiers keep your walls, draperies and furniture better looking and longer lasting. These units are cost effective; they require no electricity or maintenance except periodic filter replacement. Your furnace fan draws air into a filter pad, trapping particles as small as 1 micron. These units are far more effective than a standard furnace filter. |
Typical Installations

Model |
M-18 | M-22 | M1-1814 | M1-2214 |
|---|---|---|---|---|
Capacity |
400 - 1400 cfm | 800 - 2,100 cfm | 400 - 1,400 cfm | 800 - 2,000 cfm |
Dimensions |
16.75 x 21.5 x 6.75" | 16.75 x 24.5 x 6.75" | 16 x 20.5 x 4.25" | 16 x 25 x 4.25 |
Shipping Size |
27.75 x 9.75 x 23" | 27.75 x 9.75 x 23" | 23 x 6 x 17" | 29 x 6 x 17 |
Duct Openings |
18 x 14.5" | 22 x 14.5" | 18 x 14.5" | 22.5 x 14.5" |
Shipping Weight |
21 lb. | 21 lb. | 11 lb. | 12 lb. |
Filter Size |
16 x 19.5 x 4.25" | 16 x 23 x 4.25" | 16 x 20 x 4" | 16 x 25 x 4" |
Particle Removal |
6 microns up to 98%+ | 6 microns up to 98%+ | 6 microns up to 98%+ | 6 microns up to 98%+ |
- 7 Year limited warranty
- Units do not require electricity
- Filters need changing when dirty, approximately every three to four months

