Dust filter Rittal SK 3322.720 for rack/ventilation, PET material, white, pack of 5

Rittal SK 3322.720 is a pleated dust filter designed for rack and ventilation applications. Made from polyethylene terephthalate (PET) in white and supplied as a pack of five, the filter elements are lightweight and intended for routine replacement to maintain airflow and protect internal components in enclosures, fan-and-filter units, roof-mounted fans, cooling units and chillers. The pleated construction increases effective filtration area compared with flat mats and helps reduce dust ingress while supporting consistent cooling performance.

Advantages

The pleated PET design provides a larger filtration surface within a compact element, allowing improved volumetric air flow and reduced pressure drop compared with conventional chopped-fibre mats. This can lead to better cooling-unit performance and lower energy consumption under comparable operating conditions. The filters reduce dust accumulation inside enclosures and ventilation outlets, extending maintenance intervals and lowering service effort when replaced regularly.

Suitable for

• Fan-and-filter units in server racks and control cabinets
• Roof-mounted fans and ventilation outlets
• Cooling units and chillers where particulate exclusion is required
• Routine replacement programs to maintain consistent airflow

When it may not be suitable

This filter is intended for particulate filtration in air handling and ventilation paths; it is not designed for removal of gases, chemical vapours or oily aerosols. Extremely fine filtration classes or HEPA-level requirements are outside the intended performance of this PET pleated filter. For environments with aggressive chemical exposure or where ingress protection beyond particulate filtration is required, alternative sealing or filter technologies should be considered.

Key specifications

• Material: polyethylene terephthalate (PET)
• Colour: white
• Design: pleated filter element
• Quantity: pack of 5 elements
• Application: rack ventilation, fan outlets, cooling units and chillers

How to use

Install the pleated filter elements at the designated filter holder or mounting frame of the fan, filter unit or enclosure outlet, ensuring correct orientation and a snug fit to prevent bypass. Replace filters at regular maintenance intervals or sooner if visible contamination or reduced airflow is observed. Dispose of used filter elements following local waste regulations. Periodic inspection of the fan and filter housing helps maintain optimal airflow and cooling performance.

What to consider before purchase

• Verify physical compatibility with the filter holder or fan outlet dimensions in your rack or enclosure.
• Confirm that particulate filtration by a PET pleated element meets your cleanliness and protection requirements.
• Consider expected dust load and maintenance interval to determine replacement frequency and stock quantity.
• Ensure the white PET material and pleated form are suitable for your environmental and fire-safety policies.

Usage recommendations

For consistent cooling and reduced service effort, replace filters on a scheduled basis and inspect airflow performance after each replacement. Use the filters in applications specified for fan-and-filter units, roof-mounted fans and cooling equipment to maintain enclosure cleanliness and efficient heat removal.