The AstroCel® III High Efficiency Particulate Air (HEPA) filter is designed to meet the demanding airflow and efficiency requirements of the most critical applications.
  • Longer service life - 436 square feet of media - means fewer change outs
  • Low energy consumption and lower operating costs
  • High capacity operation with minimal resistance to airflow; 2400 CFM rated airflow at 1 in. w.g.
  • Chemical-resistant anodized aluminum frame provides superior strength
  • One piece polyurethane gasket seal and gel seal designs available
Unit of Measure



N/A AstroCel®

Seal Method

N/A Gasket

Nominal Size

N/A 24 x 24 x 11-1/2 in

Rated Airflow Capacity

N/A 2400 ft³

Rated Initial Resistance

N/A 1.0 in·w.g.

Media Area

N/A 436 ft²

Efficiency at 0.3 Micron (μ) Particles

N/A 99.99 %

Maximum Operating Temperature

N/A 93 ºC200 ºF

Underwriters Laboratories (UL) Classification

N/A AstroCel® III filters are UL Classified in accordance with UL Standard 900 and ULC-S111.

Performance Data

Performance Data

Performance Data for AstroCel® III High Efficiency Particulate Air (HEPA) Filters

Additional Information

Additional Information

N/A AstroCel® III filters are designed for installation into high integrity filter holding frames, side access housings, and bag in/bag out systems, including one piece urethane. Multiple gasket seal filters are available, as well as gel seal filters for frames and systems designed with knife-edge seal framing. Extractor clips are offered for side access systems requiring gel seal frames.

Longer Service Life and Lower Energy Consumption

Longer Service Life and Lower Energy Consumption

N/A Multiple mini-pleat media packs, assembled into a series of V-banks, permit substantially more media to be contained in the filter-double the media typically found in most HEPA filters. Maximum effective media area provides greater airflow capacity, low resistance, high dust holding capacity, and unusually long service life.

The V-bank configuration provides greater airflow capacity and longer service life, while lowering operating costs.

Typical Applications

Typical Applications

N/A AstroCel® III HEPA filters are ideal for applications operating with higher airflows, up to 600 FPM, and requiring ultra low pressure drop:
  • Semiconductor and electronics manufacturing
  • Pharmaceutical processing
  • Photo film manufacturing/processing
  • Hospitals, laboratories, and optical facilities
  • Food processing

Designed for High Performance

Media Configuration Reduces Operating Costs

N/A AstroCel® III filter media is made from sub-micron glass fibers formed into a high density paper. Glass filament separators are used to form the media into mini-pleat panels that withstand high velocity airflow. The V-bank configuration optimizes media performance for high airflow at very low resistance. Mini-pleat packs are sealed to the frame with two-component polyurethane to increase rigidity and prevent bypass leakage.


N/A Extruded aluminum frame components resist chemical corrosion, provide high strength, and are lighter. Cell sides are made from a single extrusion to maximize construction integrity.

TCO DiagnosticSM Analysis

TCO DiagnosticSM Analysis

N/A The large media area and lower resistance of the AstroCel® III filter can greatly reduce operating costs. Your local AAF Flanders sales representative uses an exclusive software tool, Total Cost of Ownership (TCO) Diagnostic, to help you choose the optimum filter design for your specific operating conditions.

Guaranteed Performance

Guaranteed Performance

N/A Every AstroCel® III filter is individually tested before it leaves the factory-your assurance that it meets rated efficiency. The actual test data is indicated on the label. Each filter is also assigned a serial number, and a permanent record is kept of the materials of construction and performance.



N/A Dimensions are actual and do not include gasket.

Additional sizes are available.

AstroCel® is a registered trademark of AAF International in the U.S. and other countries.

AAF Flanders has a policy of continuous product research and improvement and reserves the right to change design and specifications without notice.

Our Philosophy

Creative thinking may mean simply the realization that there’s no particular virtue in doing things the way they always have been done
~Rudolf Flesch

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