Micro Air MAA-40 Ventilated Workstation HEPA Filter 50x32 Clean Room 1.5HP 115V

Micro Air MAA-40 Ventilated Workstation HEPA Filter 50x32 Clean Room 1.5HP 115V

The Micro Air MAA-40 is a freestanding ventilated workstation designed for clean room and laboratory environments. It uses a 1.5 HP blower motor to draw air through a ceiling-mounted HEPA filter and direct the filtered airflow downward onto the work surface, creating a positive-pressure clean zone directly over the work area. This downflow configuration makes it suited for tasks requiring a particle-controlled environment without a full enclosure.

Specifications & What's Included

• Model: Micro Air MAA-40
• Manufacturer: Micro Air Manufacturing Inc., Santa Clara, CA — Made in USA
• Worksurface: 50 × 32 inches at 43 inches high
• Airflow: Downflow — fans wired to blow HEPA-filtered air down onto work area
• Filter type: HEPA (ceiling-mounted, perforated face visible in interior)
• Blower motor: 1.5 HP, 1075 RPM
• Voltage: 115V AC
• Amperage: 9A
• Frequency: 60Hz
• Lighting: 4 slots in upper hood for 46-inch phosphorescent lamps (lamps not included)
• Controls: overload push-to-reset button, power/lights on-off switch, variable speed adjust (min–max)
• Construction: blue painted steel cabinet on freestanding black metal stand legs
• Manufacture date: February 27, 1995
• No manual or peripherals included

Applications

The Micro Air MAA-40 is a downflow clean bench — a type of ventilated workstation that provides a filtered air curtain over the work area to protect the work or product from airborne particulates. Unlike a fume hood (which exhausts contaminated air away from the operator), a downflow clean bench blows HEPA-filtered air toward the work surface, making it appropriate for tasks where product cleanliness is the priority: electronics assembly, optical component handling, precision mechanical work, or small-scale clean room operations. This style of workstation was a common fixture in semiconductor fabrication support areas, quality control labs, and R&D clean rooms from the 1980s through the 2000s, offering an affordable self-contained alternative to full-room laminar flow systems. The MAA-40's variable speed control allows the operator to adjust airflow intensity to suit the application.