permatron model HFA commercial washable air filter

Permatron Model HFA ® MERV 6 Filter - 1/4", 1", or 2" Thick - Washable Electrostatic

Regular price $87.21 Sale

Size

Choose your size in the dropdown menu above.

Model HFA ® Washable Electrostatic Air Filters

All filters undersized by 1/2" on the length and width as is standard for filter sizing, unless noted as exact in the dropdown menu. Please measure your current filter. 1" thick filters are up to 1/8" undercut on thickness, 2" filters are up to 1/4" undercut on thickness, 1/4" thick filters are exact thickness.

From the paper mills on the West coast, to textile mills on the East coast, and to the hospitals and airports in the Midwest, Permatron’s commercial air filters are the original industrial workhorses of permanent, washable electrostatic air filtration, proven effective for over 60 years. Model HFA is one of the best and the oldest washable electrostatic air filters available today, ideal for facilities that require a high particle arrestance efficiency like a hospital, laboratory or nursing home.

Our exclusive Accumulator Chamber® construction features a unitized filter bank design. Multiple sets of steel framed media is assembled with distinct separation to create a triple action filtration system. This prefilter/afterfilter assembly promotes free air flow with superior dust holding capacity while resisting face loading. Excess particulates sweep through the prefilter and cross currents within the chamber cause further agglomeration and settlement until the filter is rinsed clean. No system modifications or electrical hook-ups are needed.

Features and Benefits

Polypropylene filter media contains an inherent electrostatic charge which draws particulates onto the air filter material like iron fillings onto a magnet and will not wash out over time
High loft nonwoven polyester media enhances the filter’s impingement ability to capture a greater amount of contaminants
Exclusive Accumulator Chamber design for maximum performance
Drain holes strategically placed in frame for thorough cleaning
Average arrestance efficiency 89%
Dust holding capacity 120 grams
Initial air flow resistance 0.20″ w.g.
MERV 6 rating
Available in any custom size you require up to 1,000 square inches; over 1,000 square inches is available, but requires special handling and not warrantied
Available in 1/2″, 1″, 2″ or 4″ thick, contact us to have your size listed
Galvanized steel frame; stainless steel or aluminum frames are available
UL Classified as to Flammability Only
Five-year warranty

Model Types

Model HFA features a combination of woven electrostatic polypropylene, nonwoven polyester and wire reinforcement encased within a galvanized steel frame.

A note about washable filter frame thickness:

A thicker frame on a washable filter does not contain more media nor is the media doubled up, pleated, or thicker in any way. The advertised efficiency and air flow remains the same throughout all thicknesses of washable filters in each of their respective LxW dimensions. In filtration, efficiency is the particle size a filter will capture. The frames are available in many sizes to allow users to install the filter into varying widths of tracks, slots, grilles, etc. This eliminates the need for modification of the track/slot/grille/etc. when switching from one type of filter to another, i.e. switching from a 2" thick pleated filter to a washable filter. All washable filters should be washed monthly or as needed; so they are made with enough media to work as designed and allow for proper dust holding capacity until the monthly/as needed wash is required.

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