HZL Series Multi-Stage Sub-High Efficiency Filter – For Industrial Ventilation & Cleanrooms
What Is A Sub High Efficiency Air Filter?
A: The HZL Series Sub High Efficiency Air Filter is a medium-to-high efficiency purification component designed for large airflow commercial and industrial HVAC systems. It balances high filtration performance with low resistance, cost-effectiveness, and easy installation, making it an ideal upgrade from standard high-efficiency filters.

Performance and Characteristics
Core Advantages
Broad Efficiency Range: Offers high, sub-high, and medium efficiency options to adapt to varying air quality requirements, from general ventilation to critical environments.
High Air Volume Design: Compared to standard high-efficiency filters, it requires fewer units to handle the same airflow, reducing installation costs and saving space.
Large Dust Capacity: The partition-free design, combined with ultra-fine, flame-retardant glass fiber filter paper and a thermoplastic rubber seal, ensures uniform pleat spacing. This maximizes filter material utilization and extends service life.
Low Resistance & Uniform Airflow: The optimized pleat structure minimizes pressure loss, ensuring consistent airflow distribution and reducing energy consumption.
Durable Construction: The outer frame is made of galvanized steel plate or plastic, with a moisture-proof and flame-retardant filter media, ensuring long-term reliability in demanding environments.
Function & Application
It is primarily used for:
Large Commercial & Industrial HVAC Systems: Office buildings, conference centers, hospitals, shopping malls, gymnasiums, and airports, where reliable, high-volume air purification is required.
General Ventilation & Cleanroom Pre-Filtration: As a terminal filter for standard industrial plants or a pre-filter for centralized ventilation systems in cleanrooms, providing an effective balance of performance and cost.

Customized product display
OEM, OEM Production services. Independent R&D team, one-stop solution for cleanroom projects.

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