Air Filters and Chemical Filtration

Terminal ULPA Filter

A cleanroom ceiling ULPA panel configured for direct final-air delivery from terminal housings or fan filter units into ultra-clean production zones.

Ceiling-Terminal Format
Uniform Downstream Face
Shallow Mini-Pleat Pack
Gasket or Gel Interface

Request a Quote Browse Products

Product Introduction

The terminal ULPA filter forms the final filtration surface between a ceiling housing or fan filter unit and the cleanroom. Ultra-fine mini-pleat media is bonded into a shallow anodized-aluminium frame with a clean downstream protective grid. The frame can include a flat gasket land, a gel trough or an integral knife edge to match the terminal module. A smooth discharge face and balanced pack geometry help distribute low-turbulence air across process zones, work benches and mini-environments without adding a separate downstream duct section.

Key Features

The shallow panel mounts directly at the cleanroom boundary and removes the need for a remote final-filter section.

A clean downstream grid protects the pleats and presents a uniform visible ceiling surface.

Balanced mini-pleat geometry supports even face velocity across the occupied terminal area.

Gasket, gel and knife-edge frame profiles match common ceiling housings and fan filter units.

Customer Product Concerns

The last filtration stage must integrate cleanly with the ceiling, seal around the full perimeter and deliver uniform air directly into the controlled zone.

A remotely installed final filter allows duct leakage downstream of the filtration stage.Terminal mounting places the ULPA pack at the cleanroom boundary and shortens the clean side of the air path.

Uneven filter-face velocity disturbs sensitive work directly below the ceiling.Balanced pleat distribution and an open downstream grid promote a more uniform discharge pattern.

The filter frame does not match the ceiling housing's sealing method.Dry-gasket, gel-trough and knife-edge profiles cover the principal terminal interface types.

Exposed pleats are damaged during ceiling cleaning.A flush cleanable faceguard separates the media from routine wipe-down contact.

Typical Applications

Semiconductor cleanroom ceilingsFan filter unit arraysUltra-clean process benchesPharmaceutical critical zonesPrecision assembly mini-environments

Technical Parameters

Representative construction ranges for ceiling-terminal ULPA panels are shown below.

Core Material	Ultra-fine glass-microfibre or ePTFE ULPA media with mini-pleat separators
Panel Thickness	69–150 mm overall terminal-filter 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 powder-coated or stainless-steel downstream faceguard
Core Density	Approximately 30–50 kg/m³ equivalent ULPA mini-pleat pack density
Thermal Conductivity	Approximately 0.032–0.045 W/(m·K) for the dry ULPA media pack
Surface Finish	Natural anodized aluminium with a clean white or stainless downstream grid
Joint Type	Flat EPDM gasket, polyurethane gel channel or integral knife-edge terminal connection
Customization	Available based on the intended application and operating environment.

Available Options

U15 or U16 mediaGlass-microfibre or ePTFE packDry gasket, gel trough or knife-edge frameWhite powder-coated or stainless downstream grid

Planning a Terminal ULPA Filter specification?

Send us your dimensions, installation conditions, performance targets and required surface finish.

Talk to Our Team