Second stage filter for HEPA-AIRE/BULLDOG air scrubber. 24"X24"X2" filter for particles 3 µm to 10 µm

Secondary filter for HEPA air purifier: performance and reliability

Secondary filter for the HEPA-AIRE® and BULLDOG® portable air scrubber (SAH2, SAH2MA and SAH4MA) or any other model of air scrubber which requires a 24 in X 24 in X 2 in filters. Sold by the pack of 12 filters.

This secondary filter for HEPA-AIRE/Bulldog air purifiers by Abatement Technologies is an essential component of the filtration system. It serves as the second barrier against contaminants, capturing medium-sized particles such as spores, concrete dust, aerosols, and household residue. Thanks to its cotton and polyester fiber design, it provides effective filtration while allowing finer particles to pass through to the primary HEPA filter. This disposable filter is compatible with several models, including SAH2, SAH2MA, SAH3KLV, SAH4MA, and other units requiring 24x24x2 filters.

The ideal solution for effective air purification.

Technical features of the HEPA-AIRE/Bulldog secondary filter:

The HEPA-AIRE/Bulldog secondary filter has a MERV 6 rating, ensuring 90% efficiency in capturing particles from 3 to 10 microns. UL900 class 2 certified, it meets safety standards for smoke emission and flammability. Sold in packs of 12 units, it allows for optimal replacement management in professional environments. Its robust structure and compatibility with multiple Abatement Technologies purifier models make it a reliable choice for decontamination sites and industrial spaces.

Please note that once the packaging has been opened, we cannot accept returns or exchanges.

Installing the secondary filter for HEPA air purifier:

Installing the HEPA-AIRE/Bulldog secondary filter is quick and easy. Simply open the air purifier compartment, remove the used filter, and insert the new 24x24x2 filter into the designated slot. Make sure the filter is properly positioned to ensure optimal sealing and effective filtration. This filter is designed to fit perfectly with compatible models, making replacement straightforward without the need for special tools.

Maintaining the HEPA-AIRE/Bulldog secondary filter:

To maintain consistent air quality, it is recommended to replace the secondary filter every 72 hours to 3 months, depending on the concentration of contaminants or the replacement signal from the purifier. As this is a disposable filter, no cleaning is required. It is important to follow replacement intervals to avoid saturation of the primary HEPA filter and ensure optimal air purification.

Optimal use of the secondary filter for air purifiers:

This secondary filter is ideal for environments where air quality is critical, such as asbestos removal sites, laboratories, hospitals, or industrial zones. It helps reduce the particle load on the primary HEPA filter, thereby improving the durability of the filtration system. Use this filter in controlled conditions and regularly monitor replacement indicators to ensure continuous efficiency.

Sylprotec reminder on filter management during asbestos removal work:

HEPA filter management:

• The HEPA filter is a critical component of the filtration system.
• It is recommended to install a new HEPA filter before starting the project in order to perform a dop test (dispersed oil particulate) and validate its efficiency.
• If the primary and secondary filters are properly maintained, the HEPA filter can be used for a longer period, but this depends on the saturation level.

Machines indicate the need for replacement:

• By an audible signal
• Or via a differential pressure gauge, whose needle indicates a loss of pressure each time the HEPA filter is replaced, a new dop test is mandatory to ensure the filter is functioning properly and that the suction remains compliant with standards.

When replacing a HEPA filter, it is imperative to turn off the machine.

This filter plays an essential role in maintaining negative pressure, which prevents the spread of contaminants into the environment. In an active workspace, such as a construction site or clean room, it is crucial not to interrupt this pressure. The machine must, therefore, be temporarily removed and replaced by another one already equipped with an operational filter to ensure continuity of containment.

Primary and secondary filter management:

• The primary filter must be changed twice a day during demolition periods as it quickly becomes clogged.
• The secondary filter is replaced once a day during demolition periods.
• Machines remain in operation during filter changes to avoid any interruption of negative pressure in the confined area.

FAQ about the HEPA-AIRE/Bulldog secondary filter SAHFS:

What is the lifespan of the HEPA-AIRE/Bulldog secondary filter?

The lifespan ranges from 72 hours to 3 months depending on contamination levels and the air purifier’s recommendations.

Is this filter compatible with all HEPA-AIRE and Bulldog models?

Yes, it is compatible with models SAH2, SAH2MA, SAH3KLV, SAH4MA, and other purifiers requiring a 24x24x2 filter.

Is the secondary filter reusable?

No, this filter is disposable and must be replaced regularly to ensure effective filtration and extend the life of the primary HEPA filter.

Suggested complementary products for the HEPA-AIRE/Bulldog secondary filter SAHFS:

Need additional safety equipment? See the articles; Safety Liberty hard hat (TA14LR), Omega II minor hard hat type 1 (TA14FS), motorized respirator with 1000 protection factors (R6800PF), 3M  mask protection film (R6885).

Under "Accessories" at the bottom of the page. If you're looking for work equipment, have a look at the following products: White antistatic coveralls with (V51), containment fabric or (SAH2MA) air cleaners (SACTT2).

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