Three-quarter view of a replacement FFU HEPA filter with mini-pleat media and gasket

Cleanroom équipement pièces de rechange

Filtre HEPA FFU par

A compact mini-pleat final filter that restores high-efficiency particle filtration in an existing cleanroom fan filter unit.

Dense Mini-Pleat Media
Low-Profile FFU Frame
Sealed Perimeter Pack
Matched Gasket Interface

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Introduction de produit

The FFU HEPA filter is the final air-cleaning element installed beneath the fan section of a fan filter unit. Fine glass-fiber media is formed into closely spaced mini-pleats and stabilized with hot-melt separators to provide a large filtration area within a shallow frame. Perimeter potting prevents bypass between the media pack and aluminum frame, while a compression gasket seals the filter against its supporting surface. Replacement size, efficiency class, pressure drop, gasket side and airflow direction must match the original FFU design.

Key Features

Mini-pleat construction provides high media area within a shallow FFU profile.

Continuous perimeter potting closes the leakage path between media and frame.

A fitted compression gasket seals the filter to the FFU housing or ceiling interface.

Protective face grids reduce accidental pleat damage during handling and installation.

Préoccupations du client produit

A replacement HEPA panel must fit the FFU precisely while preserving airflow and eliminating bypass around the media pack.

A frame with incorrect dimensions leaves gaps or cannot enter the FFU housing.Face size, depth and corner tolerances are matched to the original filter envelope.

An unsuitable pressure drop reduces delivered cleanroom airflow.Media area and pleat geometry are selected for the FFU operating face velocity.

Air bypasses the media through an incompatible gasket arrangement.Gasket material, width, thickness and upstream or downstream position are matched to the sealing surface.

Pleats are damaged during overhead handling and replacement.Optional upstream and downstream protective grids shield the media without blocking its open area.

Les applications typiques

Cleanroom fan filter unitsLaminar-flow ceiling modulesMini-environment final filtrationFFU filter replacement programs

Paramètres techniques

Typical construction ranges for replacement FFU mini-pleat HEPA filters are shown below.

Matériaux de base	Water-resistant micro-glass-fiber HEPA media with hot-melt mini-pleat separators
Panneau épaisseur	50-120 mm nominal filter depth
Largeur effective	305-610 mm nominal face width
Longueur maximale	Jusqu'à 1220 mm de longueur nominale du visage
Acier face épaisseur	0.4-0.8 mm optional galvanized-steel protective grid wire or sheet
Densité Core	Approximately 80-150 kg/m³ nominal pleated media-pack bulk density
Conductivité thermique	Approximately 0.035-0.050 W/(m·K) for the dry glass-fiber media pack
surface finie	Natural anodized-aluminum frame with white media and dark-gray closed-cell gasket
Type joint	Mini-pleat pack continuously potted into a mitered frame with compression-gasket seal
Customisation	Disponible en fonction de l'application prévue et de l'environnement d'exploitation.

Options disponibles

Matched HEPA efficiency classUpstream or downstream gasketSingle or double protective gridCustom FFU face size and depth

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