Air Filters and Chemical Filtration

Low-Resistance HEPA Filter

An optimized mini-pleat HEPA panel that combines fine glass-microfibre media with uniform pleat channels to reduce fan resistance at cleanroom operating airflow.

Optimized Pleat Geometry
Reduced Fan Resistance
Uniform Air Distribution
Slim Aluminium Frame

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Product Introduction

The low-resistance HEPA filter is built around a closely controlled mini-pleat pack with precisely spaced hot-melt beads. Greater effective media area and uniform channel depth reduce local velocity peaks that add pressure loss. The pack is sealed into an anodized-aluminium frame with polyurethane and protected by a lightweight expanded-metal faceguard. Gasket, gel and knife-edge versions fit common terminal housings, fan filter units and low-energy air-handling systems where stable HEPA performance must be achieved with a limited fan-pressure budget.

Key Features

Optimized pleat height and spacing increase usable media area without restricting the discharge face.

Even hot-melt separators reduce turbulent flow and prevent pleat crowding at operating pressure.

A slim anodized-aluminium frame limits weight while maintaining cleanroom-compatible surfaces.

Multiple perimeter-seal formats allow the same low-resistance media concept to fit ceiling or AHU housings.

Customer Product Concerns

A cleanroom may meet particle targets yet consume unnecessary energy if the final filter imposes avoidable resistance throughout its service life.

Existing FFU motors run near maximum speed to overcome the terminal filter.The expanded mini-pleat area lowers media velocity and preserves more usable fan-pressure reserve.

Uneven pleat spacing produces early loading in isolated sections of the filter.Consistent separator placement distributes airflow and particulate capture across the whole face.

A bulky deep filter will not fit the available ceiling plenum.The shallow aluminium-frame panel provides HEPA filtration in common 69–90 mm terminal depths.

Reducing pressure drop must not create a fragile media pack.Faceguards, continuous edge potting and controlled pleat geometry support the pack during handling and operation.

Typical Applications

Energy-efficient fan filter unitsLow-pressure cleanroom ceilingsSemiconductor process baysPharmaceutical filling suitesClean laboratory supply terminals

Technical Parameters

Typical low-resistance mini-pleat HEPA panel ranges are listed below.

Core Material	High-area glass-microfibre HEPA media with thermoplastic mini-pleat separators
Panel Thickness	69–90 mm aluminium-frame depth
Effective Width	305–610 mm nominal face width
Maximum Length	Up to 1220 mm nominal face length
Steel Facing Thickness	0.4–0.6 mm galvanized or powder-coated expanded-steel faceguard
Core Density	Approximately 30–45 kg/m³ equivalent mini-pleat media density
Thermal Conductivity	Approximately 0.035–0.043 W/(m·K) for the dry glass-microfibre pack
Surface Finish	Natural anodized-aluminium frame with clean white or galvanized faceguards
Joint Type	EPDM gasket, polyurethane gel channel or extruded knife-edge frame
Customization	Available based on the intended application and operating environment.

Available Options

H13 or H14 efficiency69 mm or 90 mm frame depthDry gasket or fluid-gel sealPowder-coated or stainless-steel faceguard

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