JS Type Square Negative Pressure Exhaust Fan
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JS Type Square Negative Pressure Exhaust Fan - Image 3
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JS Type Square Negative Pressure Exhaust Fan

JS type square negative pressure exhaust fan adopts heavy-duty square frame design, featuring large air volume, fast air exchange and low noise. Heat dissipation, smoke exhaust, dust removal and cooling integrated. Easy installation, stable running, ideal for factory, poultry farm, warehouse and greenhouse ventilation.

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Product Overview

The JS Type Square Negative Pressure Exhaust Fan is a high-efficiency industrial ventilation fan designed for factory cooling, air exchange, and large-scale exhaust applications. Featuring a square box structure with carbon steel blades, the fan provides large airflow, low power consumption, long-distance air delivery, and low-noise operation.

The product is widely used in industrial plants, warehouses, greenhouses, poultry farms, livestock buildings, and commercial ventilation systems.

Available configurations include:

Direct Drive Type (A Type)

Belt Drive Type (C Type)

Louver Type

Front-and-Back Protective Net Type

Product Features

  • Large Airflow & Energy Saving  Equipped with 6 carbon steel blades to deliver powerful airflow while maintaining low energy consumption.
  • Low Noise Operation  Optimized blade structure and airflow design reduce operational noise, making the fan suitable for continuous industrial ventilation.
  • Multiple Drive Configurations
  • Different drive methods satisfy various ventilation and installation requirements.
  • Automatic Louver System  Louver type models automatically open and close during operation, preventing rainwater, dust, and reverse airflow.
  • Safety Protection Design  Front-and-back protective net models improve operational safety and prevent foreign object intrusion.
  • Durable Construction  Heavy-duty iron housing combined with carbon steel impeller ensures long-term stable operation.

Applications

  • Industrial factories
  • Manufacturing workshops
  • Warehouses
  • Office buildings
  • Greenhouses
  • Poultry farms
  • Livestock breeding facilities
  • Cooling and ventilation systems
  • Industrial exhaust and air circulation systems

Working Conditions

  • Conveyed medium: Non-flammable and low-corrosive gas
  • Gas temperature: ≤ 50°C
  • Relative humidity: ≤ 80%
  • Dust and solid impurities:
  • ≤ 100 mg/m³
  • English standard version: ≤ 150 mg/m³

Certifications

  • CE Certification
  • SASO Certification
  • CB Certification
  • GCC Certification
  • CCC Certification

Product Structure

  • A Type – Direct Drive  Motor directly drives the impeller for stable operation, lower maintenance, and higher transmission efficiency.
  • C Type – Belt DriveBelt transmission design allows flexible operation and easier maintenance for various working conditions.
  • Louver ConfigurationAutomatic shutter system prevents reverse airflow and protects the internal structure.
  • Protective Net ConfigurationFront-and-back protective nets improve safety during operation.

 

Main Technical Parameters

JS-II A Type (Direct Drive)

Model Power (kW) Voltage (V) Speed (r/min) Air Volume (m³/h) Noise dB(A) Configuration
JS-II-4A 0.37 220/380 1400 7200 ≤73 With Louver
JS-II-5A 0.55 220/380 1400 8600 ≤75 With Louver
JS-II-6A 0.25 220/380 720 17000 ≤70 Louver / Protective Net
JS-II-8A 0.4 220/380 520 23000 ≤71 Louver / Protective Net
JS-II-9A 0.55 220/380 520 27500 ≤73 Louver / Protective Net
JS-II-10A 0.55 380 460 32000 ≤74 Louver / Protective Net
JS-II-12A 0.75 380 460 37000 ≤75 Louver / Protective Net
JS-II-13A 1.1 380 460 44500 ≤78 Louver / Protective Net

JS-II C Type (Belt Drive)

Model Power (kW) Voltage (V) Speed (r/min) Air Volume (m³/h) Noise dB(A) Configuration
JS-II-8C 0.55 220/380 520 23000 ≤71 Louver / Protective Net
JS-II-9C 0.75 220/380 520 27500 ≤73 Louver / Protective Net
JS-II-10C 0.75 220/380 460 32000 ≤74 Louver / Protective Net
JS-II-12C 1.1 220/380 460 37000 ≤75 Louver / Protective Net
JS-II-13C 1.1 220/380 460 44500 ≤78 Louver / Protective Net

Installation Dimensions

A Type with Louver

Model L (mm) B (mm) H (mm) Impeller Diameter Φ(mm) Bolt Specification
4A 502 342 502 395 —
5A 602 342 602 495 —
6A 752 332 750 580 8-M8
8A 982 372 980 780 8-M8
9A 1052 372 1050 880 8-M8
10A 1112 372 1050 965 8-M8
12A 1222 402 1220 1040 8-M8
13A 1383 402 1381 1220 8-M8

Product Advantages

  • High Airflow Performance  Large airflow volume with long-distance air delivery for factory ventilation and cooling applications.
  • Energy Efficient   Low power consumption reduces operational costs for long-term industrial use.
  • Quiet Operation   Noise levels controlled within ≤70–78 dB(A), suitable for noise-sensitive environments.
  • Flexible Installation   Multiple protection and drive configurations adapt to different installation requirements.
  • Reliable & Durable   Iron housing and carbon steel blades ensure stable and long-lasting performance.
  • Safety Protection   Automatic louvers and protective net options improve operational safety.

OEM & ODM Services

  • OEM manufacturing
  • ODM customization
  • Customized voltage and frequency
  • Customized protective configurations
  • Customized dimensions and appearance
  • Private label packaging support

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