Dry filtration / Molitron equipment
EPFA
Three stages of dry filtration.
The Enviro-Pak Filter Assembly (EPFA) is Molitron’s pollution control unit for light-duty commercial kitchen exhaust. Three dry filter stages remove smoke particulate and grease vapor.
UL Listed under File MH45752 · Models EPFA-24 through EPFA-144 · Listing details

Where EPFA fits
EPFA sits in the exhaust path between the kitchen hood and fan. Dry filtration uses no process water, circulation pumps or chemical dosing.
Plan the installation
Coordinate duct, support, service access, drains, fire suppression, monitoring and fan selection with the project team and authority having jurisdiction (AHJ).
Equipment / EPFA
Inside EPFA.

Access to each filter stage.
Removable gasketed doors expose the filter media for qualified service. Use the manual for monitoring, cleaning and maintenance requirements.
Equipment details may vary by configuration. Use current documents for planning.
Planning & service
Read the EPFA manualSpecifications
Final selection depends on airflow, cooking equipment, discharge and project requirements.
| Listing | UL Listed under File MH45752 · Models EPFA-24 through EPFA-144 · Investigated to the UL 8782 Outline of Investigation for Pollution Control Units for Commercial Cooking Operations |
|---|---|
| Filtration | F1 MERV 9 pre-filter · F2 MERV 14 high-efficiency stage · F3 standard MERV 14 or optional carbon final stage |
| Model range | EPFA-24 through EPFA-144 · 24–144 in. widths · 1,800–10,800 CFM |
| Construction | 18-gauge Type 304 stainless steel · fully welded, single-wall enclosure · removable gasketed access doors |
| Footprint and access | 63 in. enclosure length · width W follows the model suffix · three left-side access doors · both-side access optional |
| Monitoring | 120 VAC supply · green running indication at 1.5 in. w.g. · red service indication at the selected 2–5 in. w.g. setting |
| Placement | Indoor or outdoor within the exhaust path, subject to project-specific coordination and current installation requirements |
| Minimum clearances | 30 in. on the service-access side · 18 in. air space to combustibles/building insulation · zero clearance to noncombustible materials |
| Fan-selection input | 1.54 in. w.g. initial EPFA resistance; add hood, duct, and other system losses |
| Service | Inspect/service every four weeks and respond immediately to a red service indication |
Does EPFA provide odor control?
EPFA's standard stages address smoke particulate and grease vapor. The final stage may use MERV 14 media or optional carbon; broader odor-control needs may call for MOAS.
Model selection
EPFA model range
Model, configuration, fan selection, installation and AHJ acceptance remain project-specific.
Scroll sideways to view all model specifications.
| Model | CFM | Width | Approx. unit weight | Pre-filter qty. | High-efficiency qty. | Carbon added weight |
|---|---|---|---|---|---|---|
| EPFA-24 | 1,800 | 24 in. | 250 lb | 1 | 2 | 72 lb |
| EPFA-36 | 2,700 | 36 in. | 350 lb | 2 | 4 | 108 lb |
| EPFA-48 | 3,600 | 48 in. | 450 lb | 2 | 4 | 144 lb |
| EPFA-60 | 4,500 | 60 in. | 550 lb | 3 | 6 | 180 lb |
| EPFA-72 | 5,400 | 72 in. | 650 lb | 3 | 6 | 216 lb |
| EPFA-84 | 6,300 | 84 in. | 750 lb | 4 | 8 | 252 lb |
| EPFA-96 | 7,200 | 96 in. | 850 lb | 4 | 8 | 288 lb |
| EPFA-108 | 8,100 | 108 in. | 950 lb | 5 | 10 | 324 lb |
| EPFA-120 | 9,000 | 120 in. | 1,050 lb | 5 | 10 | 360 lb |
| EPFA-132 | 9,900 | 132 in. | 1,150 lb | 6 | 12 | 396 lb |
| EPFA-144 | 10,800 | 144 in. | 1,250 lb | 6 | 12 | 432 lb |
Unit weights are approximate. Carbon added weight is additional when the optional carbon stage is selected. Filter quantities are total quantities rather than per-stage counts.
EPFA
Documents
Read online
Installation, operation & maintenance
Receiving, installation coordination, monitoring, filter service, and equipment records.
Product brochure
EPFA Product & Planning Brochure (Rev A)
Filter stages, model specifications, service clearances and monitoring requirements for EPFA planning. Not for construction.
Technical manual
EPFA Installation, Operation & Maintenance Manual (Rev A)
Receiving, installation, startup, monitoring and qualified maintenance, with troubleshooting, warranty information and equipment records.
EPFA / Details
Equipment & installations.
Enlarge a photo to see the equipment details.
Equipment details vary by configuration; use current documents for planning and service.
1 / 6Enlarge photoEPFA pollution control unit closed
Project experience
Selected installations
Representative installation history. Names identify project experience and do not imply endorsement.

Urban Egg, CO 
Hyatt Hotel, TX 
Plaza Premium Lounge, Denver International Airport 
Taco Connection, CO 
Oyster Oyster, DC 
Garbanzo, Denver International Airport 
Greenmount Cannabis LLC, CA 
Qdoba, Denver International Airport 
555 Capital Mall, CA 
Dong Lai Shun, CA 
Stein Beer Garden, CA 
Johnny Rocket, CA
Plan a project with EPFA.
Share your location, cooking equipment and exhaust layout.