E.L. Foust 400 Series Stainless Steel Air Purifier

The E.L. Foust 400 Series is our largest freestanding air purifier, designed for larger rooms and spaces up to approximately 1,000 square feet.

Built with durable stainless steel construction, a commercial-grade steel blower, and a steel-framed HEPA filter, the 400 Series is designed for long-lasting performance without plastic components that can crack, discolor, or produce unwanted odors.

Combining HEPA filtration with a large activated carbon media tray, the 400 Series helps reduce airborne particles, odors, fumes, and certain chemical contaminants. It is suitable for homes, offices, classrooms, and other indoor environments.

Why Choose the 400 Series?

• Durable stainless steel construction built for long-lasting use
• Commercial-grade HEPA filtration to capture fine airborne particles
• Large activated carbon media tray to help reduce odors, fumes, and certain chemicals
• Multiple carbon options for different filtration needs
• Two-speed commercial-grade blower for adjustable airflow
• Optional UV light for additional treatment inside the unit
• Designed for larger spaces up to approximately 1,000 square feet
• Replaceable filters and carbon media for convenient maintenance

Product Specifications

• Recommended Room Size: Approximately 1,000 sq. ft.
• Construction: Durable stainless steel
• Dimensions: 32" high × 13.5" wide × 13.5" deep
• Shipping Weight: 60 lbs. without filters, plus 15 lbs. for filters

Shipping Dimensions:

• Air Purifier: 39" × 18" × 18"
• Filters: 18" × 12" × 12"

Airflow:

• High: 380 CFM
• Low: 285 CFM

Decibel Rating (at 3 feet):

• High: 43 dB
• Low: 39 dB

Power Requirements: 120V AC

Power Consumption:

• High: 2.0 amps / 240 watts
• Low: 1.2 amps / 144 watts

Adsorptive Surface Area: 48,800,000 sq. ft. (Refers to the internal and external surface area of the carbon, not the recommended room size.)

Optional UV Bulbs: 14 watts, 120 volts, 254 nm wavelength

Filter Options & Maintenance

HEPA Filter: Each new unit includes a commercial-grade HEPA filter designed to capture fine airborne particles, including particles as small as 0.3 microns. The filter may last up to 3 years, depending on use and air quality.

Activated Carbon: A large carbon media tray allows customers to select a carbon blend based on their filtration needs. Typical carbon replacement is every 6–9 months, depending on conditions.

Pleated Pre-Filter: Included with each unit to help capture larger airborne particles. Typical replacement interval is 2–3 months.

Optional UV Light: Available as an additional feature. Typical bulb replacement interval is approximately one year.

The 400 Series can operate continuously or as needed, depending on your indoor air quality concerns.