Expand-X Pre-Filter or HEPA Filter

Prefilter for Filtrabox Fume Extractors

$395.00

SKU: MAV1170 Category: Brand:

Description

Fume Extractor Prefilter | F9 Prefilter for Weld-R Laser Fume Extractors


Filtrabox logo for Weld-R fume extractor prefilter

Fume Extractor Prefilter for Weld-R and Vert-X laser welding systems. This F9 prefilter is engineered to capture fine particulate before it reaches the HEPA stage, which helps maintain airflow, extend filter life, and improve overall system efficiency. Use this laser welding prefilter to reduce pressure drop, protect the downstream HEPA, and keep your fume extraction running reliably shift after shift.

Why Choose the F9 Fume Extractor Prefilter

The F9 prefilter is the first line of defense in your Weld-R laser fume extractor. By removing the majority of submicronic respirable dust, the prefilter reduces loading on the HEPA filter and lowers total cost of ownership. Because the prefilter handles the heavier particulate first, the HEPA can focus on ultrafine particles, resulting in cleaner air and longer service intervals.

How the Prefilter Improves Laser Welding Air Quality

During laser welding, the process generates a spectrum of fine and ultrafine particles. The Fume Extractor Prefilter captures a significant portion of these particles up front. As a result, the system maintains capture velocity more consistently and sustains target airflow, which supports OSHA-compliant local exhaust ventilation when used correctly. In practical terms, you will notice more stable suction at the hood and fewer filter changeouts over time.

Construction and Performance

  • Efficiency: F9 rating for high-efficiency fine particulate capture ahead of HEPA.
  • Media: High surface area mini-pleat media balances low pressure drop with strong dust holding capacity.
  • Frame: Rigid aluminum cartridge minimizes bypass and ensures a consistent seal.
  • Durability: Built for abrasive welding environments and high-duty-cycle operation.

Best Practices and Maintenance

To maximize performance, inspect the differential pressure using your extractor’s gauge and replace the prefilter when readings reach the recommended threshold. Regular prefilter replacement maintains airflow, protects the HEPA, and reduces unexpected downtime. For most laser welding applications, pairing this F9 prefilter with a 99.999% at 0.3 micron HEPA filter provides robust multi-stage particulate control. For even cleaner, odor-free air, pair with a carbon filter.

Compatibility

Compatible with all Weld-R and Vert-X fume extractor models that use the standard filter set.

For complete filtration, combine with our HEPA Filter 99.999% at 0.3 micron and consider the Activated Carbon Filter for odor and gas phase control. Explore the full line of Weld-R fume extraction products or contact our team for sizing help.

Learn more about filtration standards at OSHA.gov. For welding fume safety guidance, see OSHA resources.

Prefilter Features

  • Efficiency: F9 rating captures fine particulate before HEPA for better system performance.
  • Purpose: Shields the HEPA from premature loading to lower total cost of ownership.
  • Construction: Mini-pleat media in a durable aluminum frame to minimize bypass.
  • Use case: Ideal for continuous or high-duty-cycle laser welding applications.
  • Maintenance: Replace based on differential pressure or scheduled service intervals.

Frequently Asked Questions

What does an F9 Fume Extractor Prefilter do?

It captures fine particulate first, which protects the HEPA, maintains airflow, and extends filter life during laser welding.

How often should I replace the prefilter?

Check the pressure gauge regularly and replace the prefilter when the differential pressure approaches the recommended limit. High-duty cycles may require more frequent changes.

Will this prefilter fit my extractor?

Yes. It is compatible with Weld-R and Vert-X fume extractor models that use the standard filter set.

Additional information

Weight 360 lbs
Dimensions 40 × 30 × 20 in

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