Addressing the pain points of frequent consumable replacements and high operating costs in industrial ventilation and HVAC systems, Cleantop has specially developed the Washable Primary/Medium Air Filter. This product combines high toughness PET filtering material with a corrosion-resistant aluminum alloy framework that can withstand strong impacts of 2.5m/s large airflow, and supports multiple wash rinses and reuse. While ensuring high efficiency in intercepting dust, it significantly reduces maintenance costs for your enterprise's equipment.
Get Industrial Filtration Solutions and QuotesCompletely solves the issue of ordinary paper frame filters being scrapped upon encountering water. The interior utilizes dense and highly resilient Polyester Fiber (PET), which can be rinsed with clean water or blown with high-pressure air after saturated, and the performance returns to original after drying. This greatly reduces the purchasing frequency for enterprises and lowers overall operation and maintenance costs.
In high humidity, high dust, or corrosive industrial exhaust environments, it is equipped with a high-strength aluminum alloy frame. This not only withstands rust from washing but also reliably endures strong impacts of up to 2.5m/s rated wind speed, ensuring system sealing and absolutely no air leakage.
Provides precise interception covering the efficiency levels of G3 to M5. Effectively filters large particles of dust, hair, and lint above 5μm from the air. As a front shield for air handling units (AHU), it effectively prevents fouling on the coil and significantly extends the service life of expensive high-efficiency filters at the rear.
| Product Name | Washable Primary Air Filter (Washable Primary/Medium Filter) |
|---|---|
| Filtration Grade (Efficiency) | G3 / G4 / M5 (Perfectly matches primary and medium efficiency pre-filter needs) |
| Core Filter Material (Media) | High Flow, Wear Resistant PET (Polyester Fiber) Filter Mesh |
| Frame Material (Frame) | Corrosion-Resistant Aluminum Frame (Aluminum Frame) |
| Rated Operating Wind Speed | 2.5 m/s (Optimized for large airflow industrial fresh air systems) |
| Core Application Scenarios | Industrial HVAC heating and ventilation systems, high humidity exhaust environments, heavy dust workshop pre-filtering, commercial building central air conditioning intake |
| Standard Size (W × H × D) |
• 12×24×2 inches (289 × 594 × 46 mm) • 16×20×2 inches (390 × 492 × 46 mm) • 20×20×2 inches (492 × 492 × 46 mm) • 20×24×2 inches (492 × 594 × 46 mm) • 24×24×2 inches (594 × 594 × 46 mm) |
| Custom Services (OEM/ODM) | Cleantop has a 50,000㎡ factory and a CNAS national laboratory, and products are certified by ISO/IATF16949. Supports custom sizes, thicknesses, and efficiencies for any non-standard specifications. |
Whether seeking a long-term consumable replacement for standardized filters or matching non-standard size filters for new industrial ventilation equipment. With over 20 years of experience in air filtration research and manufacturing, Cleantop can provide you with highly competitive factory prices and top-notch quality assurance.
Contact the Engineering Team / Apply for Custom SamplesOur washable primary filter meets the EN779/ISO 16890 standards, with filtration efficiency covering G3 and G4 grades (80% efficiency for particles ≥5μm). It is primarily used for intercepting large particles of dust, hair, fibers, and insects. It is widely applicable to commercial central air conditioning systems, fresh air units (AHU), fume hoods, pre-filtering sections of factories, and front-end pre-filtering in clean rooms, acting as a protective barrier for medium to high-efficiency filters, effectively extending the service life of downstream filters.
This product uses water-washable synthetic fiber filter material (such as polyester/nylon mesh + metal or plastic frame), allowing for repeated washes 5-8 times under normal conditions. The typical single-use lifespan is about 2-3 months, while the overall lifespan can reach 12-18 months, depending on site dust load and cleaning maintenance frequency. Compared to disposable filters, it significantly reduces the total cost of ownership (TCO) for customers.
Fully supported. With over 20 years of manufacturing experience and a library of over a thousand filtration solutions, we can provide comprehensive customization based on customer drawings or samples, including: size (any length, width, thickness), frame material (galvanized steel, aluminum alloy, paper frame, ABS plastic), filter material weight and efficiency level (G3/G4/M5), whether it includes a metal guard, logo printing, and neutral/brand packaging, etc. MOQ is flexible and suitable for brand owners, traders, and OEM customers developing their own product lines.
Cleantop has passed ISO 9001, ISO 14001, and ISO 45001 management system certifications, and has obtained various product certifications from Europe BSC1, USA EPA, NSF, SGS, etc. In 2024, we added IATF 16949 (automotive industry) and GMP certification for medical products. Our products have been exported in bulk to markets in Europe, the USA, Japan, South Korea, etc., compliant with REACH, RoHS and other regulations, and we can provide customers with complete export documents such as COC, test reports, and MSDS.
We have a 50,000㎡ factory and six clean rooms of 20,000㎡, along with a national-level CNAS accredited testing laboratory, equipped with professional instruments such as laser particle counters, wind tunnel test benches, and resistance testing equipment. Each batch of products undergoes a three-tier quality control process including incoming material IQC, in-process IPQC, and outgoing OQC. Key parameters (filtration efficiency, initial resistance, dust holding capacity, structural strength) are 100% tested to ensure stable and consistent product performance, and we can provide customers with third-party authoritative testing reports.
The MOQ for standard specification products is usually 500-1000pcs, while MOQ for customized specifications can be flexibly negotiated according to project needs. The free sample period is generally 5-7 working days (excluding custom molds), and bulk order delivery time is 20-30 days after order placement. We have multiple automated production lines with a monthly production capacity of over 500,000 pieces, allowing quick response to large orders and urgent restocking needs.
Yes. We welcome customers to conduct sample testing and verification before placing orders. Samples of standard specifications can be provided for free (freight collect), and samples of customized specifications may incur a nominal sample fee based on development complexity (which can be offset against the payment for bulk orders). Additionally, our CNAS laboratory can provide customers with third-party performance comparison testing services to assist them in quickly completing product selection and validation.
It is recommended that customers perform maintenance based on the differential pressure gauge readings: when the initial resistance rises to 2 times the initial value (generally around 250Pa), it is necessary to clean. Cleaning method: rinse from the air outlet side with clean water or low concentration neutral detergent, with water temperature ≤40℃; do not use a high-pressure water gun to directly flush the filter material, and allow it to dry completely before reinstalling. We provide detailed installation and maintenance instructions with the goods (supporting multiple language versions) to help end users use correctly.
