Foldable pre-filter

Key Product Features:

1. Filtration Capacity: Primarily filters large particles of dust and foreign matter ≥5 microns, serving as pre-filter protection for medium/high-efficiency filters and reducing the load on downstream filters.

2. Structural Design: The model shown features a galvanized iron outer frame with internal diamond-shaped metal mesh support. The filter media is a non-woven fabric with a pleated eight-shaped arrangement, increasing the filtration area, improving dust holding capacity, and extending service life.

3. Economic Advantages: Most filter media can be washed and reused, and the outer frame is also reusable, resulting in low operating costs. The outer frame can also be customized with materials such as aluminum.

Main Application Scenarios

• As a primary pre-filter for central air conditioning and centralized ventilation systems, it is widely used in commercial buildings such as office buildings, shopping malls, hospitals, and airports.

• In industrial settings, it serves as the intake air filter for ventilation and air conditioning systems in ordinary industrial plants, and is also used as a pre-filter in cleanroom ventilation systems in industries such as electronics manufacturing, food processing, and pharmaceutical production.

• It can be adapted to the intake and return air filtration stages of cleanrooms, acting as the first filtration stage in the entire air purification process.

Common Industry Standard Specifications ：

The most commonly used standard size in the industry is 595*595*46 mm. Besides this, there are many other commonly used standard specifications.

| Size Range | Common Specifications (Width × Height, mm) | Common Thickness (mm) |

| Small Size | 295×295, 290×595, 595×295 |

| Medium Size | 495×495, 490×490 |

| Large Size | 592×287, 592×592, 595×495 |

**Customization Instructions**
1. Customizable Content
(1) Size: Customizable non-standard sizes (width x height x depth) to suit your installation space, adapting to the installation needs of special equipment and non-standard ventilation ducts;
(2) Frame: Available in paper frame, galvanized steel plate frame, aluminum alloy frame, and ABS engineering plastic frame. Aluminum alloy and galvanized frames are more durable, and some are reusable;
(3) Filter Media: Customizable materials include ordinary non-woven fabric, washable non-woven fabric, nylon mesh, and high-temperature resistant filter media; different types of protective mesh can also be selected, such as diamond galvanized mesh and powder-coated square mesh;
(4) Efficiency: Customizable products corresponding to any efficiency level from G1 to G4 according to the requirements of the ventilation system.

2. Customization Precautions
When customizing, you need to provide precise installation opening dimensions (width x height x depth requirements), required filtration efficiency, rated air volume requirements, and special requirements of the usage environment (such as high temperature resistance, acid and alkali resistance, etc.). The supplier will adapt the corresponding materials and structures according to the parameters.