What is a HEPA filter cassette?
A HEPA filter cassette is a rigid, framed filter unit designed to drop into existing housings or air handling systems. Unlike flexible bag filters, cassettes feature a solid frame with integrated sealing surfaces, making them ideal for high-efficiency applications where leak-free installation is critical.
Cassette
Specifications
Dimensions
Cut-to-size for any housing. Standard or metric units. Tolerances down to ±0.5mm for precision fits.
→Frame Material
Aluminum, galvanized steel, stainless steel 304/316, or ABS plastic frames with reinforced corners.
→Media Grade
H11 to H14 EN 1822 certified media. Glass fiber or ePTFE options with pleat counts optimized for airflow.
→Seal Profile
Neoprene, EPDM, silicone gel, or polyurethane foam seals. Compression-fit or adhesive-backed options.
→Pressure Drop
Optimized pleat geometry to minimize resistance. Initial ΔP from 120–250 Pa depending on grade and velocity.
→End-of-Life
Recyclable frame options available. Safe change-out bag systems for contaminated environments.
→Frequently
Asked Questions
Can you match my existing housing dimensions?
Absolutely. We specialize in cut-to-size cassettes. Send us your housing drawings or physical samples, and our engineering team will design a cassette with precise tolerances to ensure a perfect fit without bypass leakage.
What frame materials do you offer?
We offer aluminum extrusion, galvanized steel for cost-sensitive projects, stainless steel 304 or 316 for corrosive environments, and high-temp ABS plastic for lightweight applications. All frames feature reinforced corner joints.
What is the minimum order quantity?
We have no strict MOQ. Whether you need 10 units for a prototype run or 10,000+ for a production contract, we can scale. Volume pricing tiers begin at 500, 1,000, and 5,000 units.
How do I replace an existing HEPA filter cassette?
Replacement is typically tool-free: open the housing access panel, release the retention mechanism, withdraw the old cassette, and insert the new one ensuring the seal gasket compresses evenly. We provide installation guides with every order.
How to order your custom cassette
Ordering a custom HEPA filter cassette is simpler than you think. Our process is designed to get you from inquiry to delivery with zero friction.
- Please submit your specifications in the “Contact Us” section.
- Receive a detailed quote and engineering review within 24 hours
- Approve the design and receive prototype samples if needed
- Place your production order with volume pricing applied
- Receive your cassettes with full test documentation
Cassette Specifications
Compare our standard configurations or request fully custom specs.
| Feature | Standard | Plus | Custom |
|---|---|---|---|
| Media Grade | H11 | H13 | H11 – H14 |
| Frame Material | Aluminum | Stainless 304 | Any material |
| Seal Type | Neoprene | EPDM | Custom profile |
| Dimensions | Standard sizes | Standard sizes | Cut-to-size |
| Efficiency | 99.97% | 99.995% | As specified |
| MOQ | 500 units | 500 units | 500 units |
| Lead Time | 2 weeks | 2 weeks | 1–4 weeks |
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