SK3238.055 Rittal Filter mat for fan-and-filter units 3238 WHD: 120x120x12mm

Why Choose the Rittal SK3238.055 Fine Filter Mat?

The Rittal SK3238.055 is a fine filter mat for Rittal 3238-series fan-and-filter units, designed to provide enhanced filtration where very fine airborne dust must be removed from the enclosure ventilation airflow. It is particularly useful for industrial environments where standard filtration alone may not provide the required level of particulate protection.

Manufactured from chemical fibres, the filter uses a progressive chopped-fibre structure with an open dust-laden air side and a closed clean-air side. It can reliably filter very fine dust particles down to approximately 1 µm and carries an F5/M5 classification to DIN EN 779, together with ISO Coarse 75% / ISO ePM10 50% classifications to DIN EN ISO 16890.

The SK3238.055 measures 120 × 120 × 12 mm (W × H × D) and is temperature-resistant up to 100 °C. When combined with the standard filter in compatible Rittal 3238 fan-and-filter equipment, the additional fine filter mat supports a higher protection category and enhanced dust filtration for sensitive electrical and electronic components.

Key Advantages

• Fine filter mat designed specifically for compatible Rittal 3238-series fan-and-filter units.
• Provides enhanced filtration for very fine airborne dust.
• F5/M5 filter class according to DIN EN 779.
• ISO Coarse 75% / ISO ePM10 50% classification according to DIN EN ISO 16890.
• Progressive filter structure with dedicated dust and clean-air sides.
• Temperature-resistant up to 100 °C.
• Self-extinguishing Category F1 according to DIN 53 438.
• Compact 120 × 120 × 12 mm format for straightforward replacement.

Key Features

• Rittal SK fine filter mat.
• Designed for compatible SK3238 fan-and-filter units.
• Made from chemical fibres.
• Chopped-fibre mat with progressive structure.
• Open structure on the dust-laden air side.
• Closed structure on the clean-air side.
• Filters very fine dust particles down to approximately 1 µm.
• 120 mm width.
• 120 mm height.
• 12 mm depth.
• Supplied in a pack of 5.

Enhanced Fine-Dust Filtration for Enclosure Ventilation

Industrial fan-and-filter systems rely on ambient air to remove heat from electrical enclosures, which means airborne dust can enter the ventilation path. The Rittal SK3238.055 provides an additional fine-filtration stage for compatible 3238-series equipment, helping prevent very small particles from reaching PLCs, drives, power supplies and other sensitive components.

The fine filter mat is used together with the standard filter, positioned closer to the fan motor, to achieve enhanced filtration and a higher protection category. Its progressive fibre structure combines effective particle retention with the airflow required for enclosure climate control, although the additional fine filtration introduces greater air resistance than a standard filter mat alone.

Typical Applications

• Rittal SK3238 fan-and-filter units.
• Industrial electrical control cabinets.
• PLC and automation enclosures.
• Machine control panels.
• Power distribution and motor control cabinets.
• Manufacturing environments containing fine airborne dust.
• Enclosures requiring enhanced filtered forced-air ventilation.