Here we offer alternative M5 air filters for the ventilation units Stiebel-Eltron LWZ 304 / LWZ 404. This filter is a quality product of filter class M5, which efficiently removes up to 55% of medium-sized dust from your exhaust air. This ensures pleasant indoor air in private and commercial properties.

Our filter has dimensions of 372x184x24 mm and therefore fits perfectly into your Stiebel-Eltron LWZ 304 or LWZ 404 units. Its frame is synthetic, ensuring high robustness and durability. Please note that the delivered filter is intended for supply/exhaust air and is therefore precisely tailored to your needs.

The air filter stands out for its excellent properties. It uses the filter medium MiniPleat, manufactured in Germany, which has a fine pleating. Compared to pleated filters (Z-Line), it provides a larger filter surface, offering higher efficiency and lower pressure drop.

As a result, the energy consumption of your heat recovery unit is reduced and the filter's lifespan is extended. Moisture and mold also have significantly less surface area for attack.

Despite its high efficiency, the filter is easy to maintain. Since it is designed for single use, it does not need to be cleaned. Depending on the quality of the supply air, however, we recommend replacing it 2-3 times a year.

What are the advantages of this air filter?
• Standard filter class for the exhaust air of ventilation systems.
• Longer service life and less wear and tear on the device compared to pleated filters (Z-Line).

The main features of the Safeluft filter:
• Solid frame, moisture-resistant and mold-resistant.
• Filter medium MiniPleat with fine folding made in Germany.
• Filter area several times larger compared to pleated filters (Z-Line).
• Low pressure drop and longer lifespan.

This filter is intended for single use and cannot be rinsed with water or chemically cleaned. A replacement interval of 2-3 times per year is recommended (depending on the quality of the supply air).

Device: Stiebel-Eltron LWZ 304 / LWZ 404

Filter class: M5 | ISO ePM10 55%

Dimensions: 372x184x24 mm

Frame: Synthetic

Product line: SafeLuft Lite

SKU: SFOLUN372X184X24C

1x Filter M5 for supply/exhaust air

Article number Stiebel-Eltron: 231331

Filter color: may differ from the article image

Note on product designation:

The item offered here is not an original product, but a compatible alternative product of comparable quality. All registered trademarks of device manufacturers as well as designations of original products are the property of the trademark owner. The use of these trademarks and product designations on this website is solely for the purpose of describing the alternative product and informing customers about it. We are not an authorized dealer and do not offer original spare parts from device manufacturers.