What this product really is
A separator HEPA filter frame is the structural part used to hold and support a separator-style HEPA filter assembly.
Its job is straightforward:
•keep the filter pack dimensionally stable
•provide a reliable outer structure
•support sealing and installation
•fit the housing or terminal box it is designed for
•make assembly or replacement easier and more consistent
•That may sound basic, but for buyers working on H13 or H14 projects, frame accuracy •matters a lot more than it does in ordinary filter products.
A frame that is slightly off in size, depth, or rigidity can create installation problems, sealing issues, or unnecessary rework during production.
Production Process
Advanced Pleating Technology
CNC-controlled pleating (±0.2 mm) delivers uniform fold spacing for stable airflow and lower ΔP-ideal for H13/H14 separator HEPA filters in cleanrooms and industrial HVAC terminals.
Separator insertion accuracy ≤0.3 mm ensures tight, repeatable alignment inside the separator HEPA filter frame, minimizing bypass and supporting EN 1822 scan testing.
Material Optimization & Frame Engineering
Aluminum separators with anti-oxidation treatment resist corrosion in >85% RH environments; stainless options (304/316L) available for harsh or chemical air streams.
TIG (argon-arc) welded frames maintain squareness and flatness, reducing warping and ensuring a leak-tight knife-edge or gel-seal fit in housings and HEPA terminal boxes.
Quality Control & Surface Finishing
100% HEPA aerosol leak testing (DOP/PAO) with ≤0.01% leakage validates frame/media integrity for H13/H14 and ULPA builds; batch COA and traceability provided.
Five-stage surface treatment - Degreasing → Phosphating → Electrophoresis → Powder Coating → Curing - enhances corrosion resistance, abrasion durability, and cleanability.
Why buyers ask for the frame only
There are a few very normal reasons.
Some customers already produce their own filter packs and only need the outer frame.
Some are repairing or rebuilding an older separator HEPA filter.
Some need a like-for-like replacement frame to match an installed housing.
And some OEM buyers want a consistent frame supply so their own assembly process stays under control.
In other words, this is not a retail product.
It is a supply item for people who already understand where the frame sits in the full HEPA filter structure and why getting it right saves time later.
Where this kind of frame is usually used
This type of frame is commonly supplied for projects involving:
•separator-type HEPA filter assembly
•cleanroom filter production
•laboratory air filtration modules
•pharmaceutical support systems
•terminal box filter replacements
•special OEM filter construction
•maintenance and rebuilding of existing HEPA units
The important point is that the frame is usually part of a larger system. Buyers are not choosing it for appearance. They are choosing it because it has to fit correctly into an existing technical process.
What matters most in a frame like this
For this kind of product, the real value is rarely in marketing language.
It comes down to things like:
•dimensional accuracy
•structural rigidity
•clean edge finishing
•material consistency
•fit with separator-type assembly
•compatibility with sealing method
•repeatability from batch to batch
That is what buyers actually pay attention to.
A frame can look fine in a product photo and still be frustrating in production if the size shifts, the corners do not stay square, or the finish is inconsistent.
That is why this page should speak more to fabrication quality and less to generic "air purification" claims.
Global Exhibition Participation
2025 China International CleanTech Expo (Booth A23)
We'll present fire-retardant separator HEPA filter frames compliant with NFPA 90A for cleanrooms and industrial HVAC terminals. The design retains precision-spaced aluminum separators for uniform pleat alignment and low pressure drop, while the flame-retardant frame/coating improves safety in BSL labs, pharma plants, and data-center AHUs.
ACHEMA Frankfurt
Spotlight on hybrid HEPA frames for pharmaceutical HVAC-aluminum separators + PP pleated media for high dust-holding capacity and stable ΔP at typical face velocities, supporting ISO 14644 and GMP environments. Ideal as pre-terminal ePM1 → F5–F9 stages in filling/packaging suites and grade-controlled corridors.
Material options are usually a project decision
Different buyers want different materials for different reasons.
Some want aluminum because it is lighter and easier to work with in certain assemblies.
Some prefer galvanized steel for cost and rigidity.
Others ask for stainless steel where the application or customer requirement is more specific.
There is no reason to overcomplicate that.
The better way to present it is simply this: the frame material should be matched to the assembly method, installation environment, and buyer preference.
That sounds obvious, but it is exactly how real enquiries are usually discussed.
Certifications & Compliance
ISO 16890:2016 air filter testing
Tested to ISO 16890:2016 so performance (ePM10/ePM2.5/ePM1) is verified under uniform methods, giving specifiers reliable data for cleanrooms and industrial HVAC. Applicable to separator HEPA filter frames used upstream/downstream of F5–F9 stages.
CE conformity for European market
CE-certified products meet essential health, safety, and environmental requirements for EU installations, enabling use in AHU terminals, HEPA housings, and media filter boxes for hospitals, pharma, electronics, and public buildings.
RoHS 2.0 hazardous substance control
Separator HEPA filter frames comply with RoHS 2.0 (lead, mercury, hex-Cr, PBDE, PBB limits), supporting safer, eco-friendly deployments in laboratories and electronics manufacturing. Documentation can be paired with EN 1822 scan/leak tests and ISO 14644 validation.
Packaging & Logistics
Export Standard: Our products are packed in sturdy wooden crates lined with moisture-proof film, which boasts an IP67 rating. This means the crates can withstand full immersion in water up to 1 meter deep for 30 minutes, effectively protecting the filters from moisture, dust, and physical damage during long-distance transportation.
Global Delivery: We offer a 15-day DDP (Delivered Duty Paid) service to EU and NA ports. Partnering with certified green logistics providers, our delivery process minimizes carbon emissions. What's more, we handle all customs clearance procedures and taxes, ensuring a hassle-free experience for customers upon arrival at the ports.
FAQ
Q: How often should separators be replaced?
A: Typically 12-18 months, depending on PM2.5 levels. Monitor pressure drop >350Pa as replacement indicator .
Q: Can frames integrate humidity sensors?
A: Yes, we provide IoT-enabled frames with ±3% RH monitoring accuracy.
Q: Minimum order quantity for customization?
A: MOQ 50 units with 15-day lead time.
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