The Excel 40521 is a replacement electrostatic HEPA filter for ThinAir® hand dryers, removing 99.999% of viruses and 99.97% of bacteria at 0.3 microns.

Key Specifications:

• Virus Removal: 99.999% at 0.3 microns
• Bacteria Removal: 99.97% at 0.3 microns
• Dimensions: 6-1/2" x 3-9/16" x 2"
• Compatibility: ThinAir® electrostatic HEPA kit

Features & Benefits:

• Superior Electrostatic Filtration: The Excel 40521 uses electrostatic technology to capture 99.999% of viruses and 99.97% of potentially present bacteria at 0.3 microns from the airstream — delivering measurably cleaner, safer air in any commercial restroom environment.
• Improved Airflow for Faster Drying: Compared to standard HEPA filters, the electrostatic design allows for better airflow through the filter media, maintaining strong hand-drying speed without sacrificing air hygiene performance.
• Slimmer, More Durable Profile: The electrostatic HEPA filter features a slimmer physical footprint than traditional HEPA options, offering greater structural durability and a longer effective service life when properly maintained.
• Annual Replacement Cycle: Excel Dryer recommends replacing the 40521 once per year (usage dependent), making maintenance scheduling straightforward for facility managers overseeing multiple ThinAir® units.

FAQ

Q: Which ThinAir® hand dryer models is the Excel 40521 compatible with?

A: The Excel 40521 is designed for ThinAir® hand dryers originally equipped with the electrostatic HEPA filter kit. Previously installed ThinAir units without the electrostatic system cannot be retrofitted — a subassembly upgrade may be purchased by contacting Excel Dryer at (800) 255-9235.

Q: Can the Excel 40521 HEPA filter be cleaned with water?

A: No — the HEPA filter must never be cleaned or come into contact with water. Only the companion stainless steel mesh pre-filter (Part #40532) is designed to be rinsed and reused. The Excel 40521 must be fully replaced at the end of its service life.

Q: How often should the Excel 40521 be replaced?

A: Excel Dryer recommends replacing the HEPA filter once annually, depending on usage and environmental conditions. In environments with high levels of lint, dust, or airborne particles, the companion pre-filter (Part #40532) should be inspected and cleaned more frequently to protect the HEPA filter media.

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