Deep-Pleat HEPA Filters

Deep-pleat HEPA filters use a deeper pleated media pack with separators positioned between the pleats to help maintain airflow channels and support the filter structure.

Depending on project requirements, Clean-Link can support H13 and H14 efficiency options, aluminum separator construction, aluminum, galvanized steel or stainless steel frames, custom dimensions, gasket configurations, airflow and pressure drop review, and project-specific testing requirements.

Deep-Pleat HEPA Filter Products

Deep-Pleat HEPA Filter with Aluminum Frame

A lightweight rigid-frame option for HVAC, cleanroom, laboratory and industrial final filtration applications.

Typical options:

• H13 / H14 project requirements
• Aluminum separator construction
• Custom length, width and depth
• Gasket options
• Box or flange configurations
• Project-specific airflow

Deep-Pleat HEPA Filter with Galvanized Steel Frame

Suitable for selected industrial, HVAC and replacement projects where stronger frame construction is required.

Typical options:

• Galvanized steel frame
• Separator media pack
• H13 / H14
• Custom dimensions
• Gasket configuration
• Industrial filter bank applications

Deep-Pleat HEPA Filter with Stainless Steel Frame

Designed for projects where frame durability, corrosion resistance or specific operating conditions require stainless steel construction.

Typical applications may include:

• Pharmaceutical facilities
• Laboratories
• Industrial process environments
• Cleanroom systems
• High-specification replacement projects

High-Temperature Separator HEPA Filter

For applications involving elevated operating temperatures, filter material selection must include the media, separator, frame, sealant and gasket system.

Project requirements should confirm:

• Continuous operating temperature
• Peak temperature
• Frame material
• Separator material
• Sealant
• Gasket requirement
• Airflow
• Efficiency requirement

What Is a Deep-Pleat HEPA Filter?

A deep pleat HEPA filter uses a relatively deep filter media pack with separators between individual pleats.

The separators help maintain consistent spacing between media folds and create airflow channels through the filter pack.

Common separator materials may include aluminum or other project-specific materials.

This construction is widely used where buyers require:

• Rigid HEPA filter construction
• Deep media pack geometry
• High media area
• Industrial filter bank compatibility
• Replacement of traditional separator HEPA filters
• Specific temperature or structural requirements
• Custom frame and gasket configurations

Deep-pleat construction is especially relevant when the existing system or equipment was originally designed around separator-style HEPA filters.

Deep-Pleat vs Mini-Pleat HEPA Filters

Both filter types can be used for high-efficiency filtration, but their structures are different.

Neither construction is automatically “better.”

The right choice depends on:

• Existing housing
• Filter depth
• Rated airflow
• Pressure drop target
• Efficiency class
• Operating environment
• Temperature
• Sealing requirements
• Replacement compatibility

Related collection: Mini-Pleat HEPA Filters

Aluminum Separator HEPA Filters

Aluminum separators are commonly used in traditional deep-pleat HEPA construction.

The separator maintains spacing between pleats while helping create airflow channels through the filter media pack.

An aluminum separator HEPA filter may be appropriate for:

• Industrial HVAC systems
• High-efficiency filter banks
• Cleanrooms
• Pharmaceutical applications
• Laboratories
• Equipment filtration
• Replacement HEPA filter projects
• Higher-temperature applications where suitable materials are selected

Separator design should be reviewed together with media depth, frame material, sealant, rated airflow and pressure drop requirements.

H13 and H14 Deep-Pleat HEPA Filters

Clean-Link can support H13 and H14 project requirements for deep-pleat HEPA filters.

Efficiency selection should be based on the real project requirement rather than choosing the highest class automatically.

Important factors include:

• Application
• Required filtration performance
• Rated airflow
• Pressure drop
• Fan capability
• Filter bank design
• Prefiltration
• Sealing
• Testing requirements
• Replacement plan

For high-efficiency filters, EN 1822 and ISO 29463 are commonly used as technical references for classification and testing.

Related guide: Understanding HEPA Filter Efficiency

Frame Options

Deep-pleat HEPA filters can be supplied with different frame materials depending on system and environmental requirements.

Aluminum Frame

Commonly used where lightweight construction and clean handling are important.

Suitable for many:

• HVAC systems
• Cleanrooms
• Laboratories
• Equipment applications

Galvanized Steel Frame

Provides rigid structural support for selected industrial and HVAC filter bank applications.

Stainless Steel Frame

May be selected where corrosion resistance, cleaning conditions or specific industrial environments require it.

Frame selection should be reviewed together with:

• Filter weight
• Housing design
• Gasket compression
• Temperature
• Humidity
• Corrosion exposure
• Replacement handling

Gasket and Sealing Options

HEPA filter performance depends not only on the filter media but also on how the filter seals into the housing.

Clean-Link can support:

• Upstream gasket
• Downstream gasket
• Double gasket
• Full-face gasket
• Foam gasket
• EPDM gasket where applicable
• Custom gasket width
• Custom gasket position
• Flange frame
• Box frame

A properly matched gasket and housing interface helps reduce air bypass around the filter.

Related article:

Air Filter Bypass Leakage: How Frames, Gaskets, and Installation Affect Performance
https://clean-link.com//blogs/technology/air-filter-bypass-leakage-sealing

Airflow and Pressure Drop

Deep-pleat HEPA filters should always be selected according to the actual airflow requirement of the system.

Important parameters include:

• Rated airflow
• Face velocity
• Initial pressure drop
• Final pressure drop
• Media area
• Pleat depth
• Separator spacing
• Filter dimensions
• Fan capability
• Prefiltration stage
• Dust loading

A deeper filter does not automatically mean lower resistance.

Actual pressure drop depends on the complete filter design and operating airflow.

For replacement projects, matching the existing size alone is not enough. The airflow and resistance requirement should also be checked.

Related article:

Air Filter Pressure Drop
https://clean-link.com//blogs/technology/air-filter-pressure-drop-efficiency-airflow-energy

Industrial HEPA Filter Applications

Deep-pleat filters are commonly used as industrial HEPA filters in applications requiring rigid construction and high-efficiency final filtration.

Typical applications include:

• Manufacturing facilities
• Pharmaceutical production
• Biotechnology facilities
• Laboratories
• Electronics manufacturing
• Industrial HVAC systems
• Process ventilation
• Cleanrooms
• Equipment air intake
• Equipment exhaust filtration
• Replacement HEPA filter banks
• OEM air handling equipment

For industrial applications, the filter should be selected according to particle load, airflow, operating hours, prefiltration, temperature and maintenance conditions.

Related page:

Industrial Air Filtration Solutions
https://clean-link.com//pages/industrial-air-filtration-solutions

Custom Deep-Pleat HEPA Filters

Clean-Link supports custom deep-pleat HEPA filters for non-standard systems and replacement projects.

Customization may include:

• Custom length
• Custom width
• Custom depth
• H13 / H14 project requirements
• Aluminum separators
• Different frame materials
• Gasket location
• Flange design
• Box frame design
• Rated airflow
• Pressure drop target
• Temperature requirement
• Packaging
• OEM labeling
• Drawing-based production
• Sample matching

For replacement projects, buyers can send:

• Existing filter photo
• Filter label
• Actual dimensions
• Frame details
• Separator type
• Gasket position
• Airflow direction
• Drawing
• Physical sample

Related page:

Custom HEPA Filters
https://clean-link.com//pages/custom-hepa-filters

Replacement Separator HEPA Filters

Many deep-pleat inquiries involve replacing an existing separator HEPA filter.

An old filter may have a non-standard frame size, unusual depth, specific flange design or special gasket location.

For a replacement project, Clean-Link recommends confirming:

If complete data is unavailable, start with:

Photo + dimensions + application

High-Temperature Considerations

Some deep-pleat separator HEPA filters are used in elevated-temperature environments.

High-temperature filter selection requires more than choosing a metal frame.

The complete construction should be reviewed, including:

• Filter media
• Separator material
• Frame
• Sealant
• Gasket
• Protective components
• Continuous temperature
• Peak temperature
• Airflow
• Operating cycle

Do not assume that every separator HEPA filter is suitable for high-temperature use.

Temperature requirements should be confirmed before quotation and production.

How to Select a Deep-Pleat HEPA Filter

Before requesting a quotation, provide as much of the following information as possible:

Request a Deep-Pleat HEPA Filter Quote

Need a deep pleat HEPA filter for an industrial system, HVAC filter bank, cleanroom, equipment application or replacement project?

Send Clean-Link:

• Filter dimensions
• Efficiency class
• Rated airflow
• Pressure drop requirement, if available
• Frame material
• Separator requirement
• Gasket or flange configuration
• Temperature requirement
• Application
• Quantity
• Existing filter photo or drawing

If you do not know the complete specification, start with:

Photo + dimensions + application

Clean-Link can help review what should be confirmed next.

Request a Quote →
https://clean-link.com//pages/contact

FAQ

What is a deep-pleat HEPA filter?

A deep-pleat HEPA filter uses a deep pleated media pack with separators positioned between the pleats to maintain airflow channels and support the filter structure.

What is a separator HEPA filter?

A separator HEPA filter uses materials such as aluminum separators between the media pleats. Separator construction is common in traditional deep-pleat HEPA filters.

What is the difference between deep-pleat and mini-pleat HEPA filters?

Deep-pleat HEPA filters use deeper pleats supported by separators, while mini-pleat HEPA filters use closely spaced pleats in a more compact media pack. Selection depends on housing, airflow, pressure drop, depth, application and replacement requirements.

Are H13 and H14 deep-pleat HEPA filters available?

Clean-Link can support H13 and H14 project requirements depending on filter design, dimensions, airflow, testing expectations and application.

Can deep-pleat HEPA filters be customized?

Yes. Custom options may include length, width, depth, frame material, separator, efficiency, gasket, flange, airflow, pressure drop and temperature requirements.

What frame materials are available?

Depending on project requirements, frame options may include aluminum, galvanized steel and stainless steel.

Are separator HEPA filters suitable for high-temperature applications?

Some separator HEPA filters can be designed for elevated temperatures, but the media, separator, frame, sealant and gasket must all be suitable for the operating temperature.

What information is needed for a quote?

Provide dimensions, efficiency, rated airflow, frame material, separator type, gasket or flange requirement, temperature condition, application, quantity and an existing filter photo or drawing if available.