STjh 35 mm U16 mini-pleat ULPA filter main product view

STJH-MINI-PLEAT-ULPA-U16-35

Mini-Pleat ULPA Filter 35 mm U16

A 35 mm U16 ePTFE pack balancing very low penetration with controlled clean resistance for advanced fabs.

U16 at MPPS
0.40 in. w.g. clean resistance
35 mm supported ePTFE

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Product Introduction

The U16 selection reduces allowable MPPS penetration by an order of magnitude compared with U15 while retaining the same supported 35 mm ePTFE architecture. Its nominal resistance rises moderately to 0.40 in. w.g. at 100 fpm, a tradeoff that should be included in ceiling fan sizing. Use it where the process target justifies U16 but the higher U17 pressure burden is unnecessary.

Key Features

U16 process protection

The 99.99995% MPPS grade addresses advanced microelectronics zones with tighter penetration limits than U15.

Predictable fan requirement

A documented 0.40 in. w.g. point at 100 fpm supports realistic fan-array and ceiling-pressure calculations.

Boron-free construction

The supported ePTFE medium avoids glass fibers and provides a membrane option for elemental-contamination control plans.

Technical Parameters

Efficiency Class	U16
Minimum Efficiency	99.99995% at MPPS
Media Type	Boron-free supported ePTFE membrane
Media Pack Depth	35 mm
Nominal Face Velocity	100 fpm based on net filter area
Nominal Initial Resistance	0.40 in. w.g.
Frame Material	Clear anodized extruded aluminum
Media Sealant	Phosphorus-free polyurethane
Seal Interfaces	Gasket, reverse gel or knife edge
Customization	Available based on the intended application and operating environment.

Applications

Intended for advanced semiconductor production, lithography support and precision mini-environments that specify U16 efficiency. The complete ceiling or tool module should be commissioned at the selected net face velocity and checked for seal engagement after replacement.

Solutions for Your Application

A U16 upgrade is selected without accounting for its added clean resistance.Use the 0.40 in. w.g. value at 100 fpm in the airflow model and confirm spare fan pressure before changing the grade.

Membrane damage occurs when installers press the filter face into the frame.Handle only by the aluminum perimeter and specify a faceguard where the installation path exposes the media.

Available Options

Specify face dimensions, overall frame series, seal geometry and location, protective guard material, divider and test-port needs.

Planning a Mini-Pleat ULPA Filter 35 mm U16 specification?

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

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