Package of two Permatron Poly-203370 Electrostatic polypropylene prefilter for F300 and F50F series. Independing testing shows 43% increase in average arrestance efficiency over metal mesh prefilter. We measure each filter 10 x 20 x 1/4. Designed specifically to spects for the 20" x 20" Honeywell F300 and F50F. The prefilter are half size of the air cleaner to accomodate tight space such a closet HVAC unit were full size fitlers cannot be used. This electrostatic prefilter fits the Honeywell F300E1027, F300A2020 and F50F1032 air cleaner. This poly-203370 prefilter is for series F300E, F300A, F50F and will NOT fit the the F50A or F50E Series.
The Permatron prefilter significantly improves the capture of the larger 10+ micron particulate. By effectively removing this larger particulate, the collector cell more effectively captures the smaller particulate. The improved capture of large particles will reduce the occasional spark. Also the need to wash the cells will be extended. The Permatron prefilter has a low 0.09 wg air resistance making it interchangeable with the metal mesh at 0.07 wg. A quick cleaning of the prefilter is recommended once a month. Simply vacuum or rinse with a hose. Washing the cells would be recommended every 6 months. See brochure for more info.
Permatron prefilters constructed with a rugged galvanized steel frame. The frames do not easily kink or push out of square. They are not flimsy like the Honeywell brand. The prefilter polypropylene weave is gripped solid by the steel frame. Very good quality.
Permatron filters are made in Illinois. The polypropylene, aluminum mesh and steel frame are all products of the USA.
The genuine Honeywell prefilters are stamped with Product of Mexico.