Excel 40521 | ThinAir® Electrostatic HEPA Filter Replacement | 99.999% Virus Removal
Excel 40521 | ThinAir® Electrostatic HEPA Filter Replacement | 99.999% Virus Removal is backordered and will ship as soon as it is back in stock.
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For time-sensitive orders, please contact us directly so we can provide a more accurate lead time estimate based on your specific requirements.
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All in stock orders received before 3PM EST will ship the same day. Orders received after 3PM EST will ship the following business day.
Water Filters, Hand Dryers, & Indoor Bottle Fillers are our most popular in stock items.
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Evergreen normally ships in 5-15 days. Black, Gray and Blue ship in 2-4 weeks.
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In stock units ship within 48 hours. Other units normally ship in 2-4 weeks.
Other
Orders that ship directly from a manufacturer normally have a firm shipping estimate but those dates are subject to change due to manufacturer production, inventory or shipping. We do our best to estimate ship dates but orders shipping directly from the manufacturer can have unexpected delays. We will confirm tracking information when orders ship directly from a manufacturer but may not have updates or estimates beyond the original estimate. Once your order is placed with the manufacturer, it may not be able to be cancelled even if it hasn't shipped yet.
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Special Case Shipping Rates
Please note that shipping rates are subject to change at any time. We reserve the right to charge an additional fee in addition to the regularly advertised shipping fee for shipping to remote areas not easily accessible by typical freight carrier means (i.e. islands only accessible by ferry). If your order falls into this category, you will be notified upon receipt of your order, and have the option to complete the purchase with additional fee or to cancel the order. Please note, these instances are very rare, as most locations are reachable by regular freight. If you have any questions, please contact us!
Key Terms & Conditions
Exceptions may apply to islands and other remote territories.
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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.
NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.
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Always consult with a licensed professional and check local codes before installation. For further details, check the Owners Manual.
Contact us at support@bottlefillingstations.com with any questions.



