Description
Side Wall Ventilation and Exhaust Fans
Powerful air extraction for industrial ventilation. Engineered with an explosion-proof pure copper motor, thickened carbon steel casing, and a robust insect/rain proof cover for continuous exterior wall duty.
Key Technical Features
Engineered for durability and safety in demanding industrial environments.
Thickened Casing
Precisely cut carbon steel with a spray-painted finish for high hardness, rust protection, and excellent wear resistance.
Copper Ex Motor
Explosion-proof pure copper motor with strong sealing and sufficient power to drive the impeller efficiently.
High-Efficiency Impeller
Optimized blade angles and airflow passages deliver smoother air output while reducing motor load.
Insect & Rain Cover
Sloped design channels water away, while a dense metal mesh blocks insects and debris from entering.
Technical Specifications
LWWEX-IR Series dimensions and performance data across 13 models.
Dimensions (mm)
| Model | L1 Mounting Frame (±5mm) | L2 Flange Frame (±5mm) | L3 Overall Fan Height (±5mm) |
|---|---|---|---|
| LWWEX-IR-2.5A | 340 | 400 | 561 |
| LWWEX-IR-3A | 370 | 430 | 582 |
| LWWEX-IR-3.5A | 430 | 490 | 654 |
| LWWEX-IR-4A | 475 | 535 | 734 |
| LWWEX-IR-4.5A | 530 | 590 | 805 |
| LWWEX-IR-5A | 580 | 640 | 856 |
| LWWEX-IR-5.5A | 650 | 710 | 981 |
| LWWEX-IR-6A | 690 | 750 | 1023 |
| LWWEX-IR-6.5A | 740 | 800 | 1074 |
| LWWEX-IR-7A | 800 | 860 | 1135 |
| LWWEX-IR-7.5A | 840 | 900 | 1184 |
| LWWEX-IR-8A | 885 | 945 | 1244 |
| LWWEX-IR-9A | 1030 | 1150 | 1423 |
Performance Data
| Model | Airflow (m³/h) | Static Pressure (pa) | Motor Power (KW) | Speed (r/min) | Voltage (V) |
|---|---|---|---|---|---|
| LWWEX-IR-2.5A-0.09-4P-3-001 | 1500 | 40 | 0.09 | 1420 | 380 |
| LWWEX-IR-2.5A-0.09-4P-1-001 | 1500 | 40 | 0.09 | 1400 | 220 |
| LWWEX-IR-3A-0.18-4P-3-001 | 1800 | 60 | 0.18 | 1400 | 380 |
| LWWEX-IR-3A-0.18-4P-1-001 | 1600 | 60 | 0.18 | 1380 | 220 |
| LWWEX-IR-3.5A-0.25-4P-3-001 | 3000 | 80 | 0.25 | 1380 | 380 |
| LWWEX-IR-3.5A-0.25-4P-1-001 | 2800 | 80 | 0.25 | 1360 | 220 |
| LWWEX-IR-4A-0.37-4P-3-001 | 5200 | 140 | 0.37 | 1400 | 380 |
| LWWEX-IR-4A-0.37-4P-1-001 | 5000 | 140 | 0.37 | 1400 | 220 |
| LWWEX-IR-4.5A-0.55-4P-3-001 | 7800 | 160 | 0.55 | 1400 | 380 |
| LWWEX-IR-4.5A-0.55-4P-1-001 | 6300 | 160 | 0.55 | 1400 | 220 |
| LWWEX-IR-6A-0.55-6P-3-001 | 12000 | 120 | 0.55 | 960 | 380 |
| LWWEX-IR-6.5A-0.75-6P-3-001 | 16500 | 150 | 0.75 | 960 | 380 |
| LWWEX-IR-7A-1.1-6P-3-001 | 19000 | 180 | 1.1 | 960 | 380 |
| LWWEX-IR-7.5A-1.5-6P-3-001 | 22500 | 210 | 1.5 | 960 | 380 |
| LWWEX-IR-8A-2.2-6P-3-001 | 25000 | 230 | 2.2 | 960 | 380 |
| LWWEX-IR-9A-3-6P-3-001 | 34000 | 260 | 3 | 960 | 380 |
Thickened Carbon Steel Casing
Built for the harshest industrial conditions, the main casing is manufactured from thickened carbon steel. It is precisely cut and formed to ensure a smooth, flat surface with structural integrity.
The exterior features a durable spray-painted finish, offering excellent wear resistance, rust protection, and high hardness. This extends the fan's durability and protects internal components from harsh elements.
- Heavy-duty construction — thickened steel prevents warping
- Spray-painted finish — strong rust and corrosion resistance
- Extended durability — withstands tough industrial environments
Powerful Air Extraction
The LWWEX-IR series is engineered to quickly remove hot, stale, and odorous air from your facility. By rapidly extracting contaminated air, it vastly improves indoor airflow and creates a more comfortable, safer working environment.
With airflow volumes reaching up to 34,000 m³/h, these side wall fans can handle large-scale exhaust requirements for factories, production floors, and chemical storage areas.
- High-volume exhaust — up to 34,000 m³/h capacity
- Quick heat removal — prevents equipment overheating
- Improves air quality — clears out stale and odorous air rapidly
High-Efficiency Impeller Design
The fan blades are carefully engineered with optimized blade angles and airflow passages. This specific aerodynamic design ensures that the fan delivers smoother, more stable airflow at all speeds.
By optimizing the air passage, the impeller reduces the operating load on the motor. This translates to lower energy consumption and less wear on the drive system over long operating cycles.
- Optimized blade angles — maximizes airflow stability
- Smooth air passage — reduces turbulence and resistance
- Lower motor load — enhances overall energy efficiency
Space-Saving Wall Installation
The LWWEX-IR features a square wall-mounted structure that fits directly into a reserved wall opening. This thoughtful design eliminates the need for bulky floor stands or complex ducting.
By mounting flush against the wall structure, the fan keeps critical facility aisles, walkways, and equipment areas entirely clear, making it an ideal solution for tight production floors.
- Direct wall mount — fits standard reserved openings
- Zero floor footprint — keeps warehouse and factory aisles clear
- Secure fitment — robust flange frame secures tightly to the wall
Explosion-Proof Pure Copper Motor
At the core of the LWWEX-IR is a high-performance, explosion-proof motor built with pure copper coils. This ensures strong sealing, excellent heat dissipation, and sufficient power to maintain high airflow output.
The motor utilizes a direct-drive setup, connecting straight to the impeller. This eliminates the need for belts or pulleys, drastically lowering routine maintenance burdens and improving transmission efficiency.
- Pure copper coils — superior conductivity and thermal stability
- Direct-drive mechanism — no belt replacements needed
- Explosion-proof sealing — safe for hazardous industrial zones
Insect & Rain Proof Cover
Designed specifically for exterior wall installation, the fan housing integrates a sloped exterior cover that quickly channels rainwater away from the opening.
Beneath the hood, a dense metal mesh provides a physical barrier that helps prevent insects, leaves, and larger outdoor debris from entering the building. This guarantees long-lasting protection while maintaining efficient ventilation.
- Sloped weather hood — deflects rain and prevents water ingress
- Dense metal mesh — blocks bugs, leaves, and debris
- Exterior ready — ensures reliable outdoor operation year-round
Low Noise, Stable Operation
Despite its powerful extraction capabilities, the LWWEX-IR is engineered for stability. The optimized fan structure and direct-drive coupling significantly reduce mechanical vibration and operating noise.
This stable, low-noise profile makes the fan highly suitable for continuous, all-day ventilation in workshops, warehouses, and equipment rooms without causing excessive noise fatigue for workers.
- Vibration reduction — rigid housing and balanced impeller
- Continuous duty — stable operation for long shifts
- Worker comfort — controlled noise output in busy environments
Widely Applicable To Various Scenarios
Engineered for safety and reliability, the LWWEX-IR series provides high-volume, explosion-proof ventilation across diverse industrial environments.
Factory Workshops
High-volume air extraction to remove excess heat and industrial fumes, maintaining a safe and comfortable environment for production lines.
Warehouses & Logistics Centers
Powerful cross-ventilation to prevent heat buildup and moisture accumulation in expansive storage and distribution facilities.
Oil & Gas Facilities
Certified explosion-proof motor design ensures the safe exhaust of volatile gases in refineries, drilling sites, and processing plants.
Chemical Processing Plants
Safely extracts corrosive fumes and hazardous vapors, meeting strict safety and environmental standards for chemical manufacturing.
Painting & Coating Workshops
Reliably clears flammable paint fumes and airborne particulates, significantly reducing fire risks in enclosed coating booths.
Battery Manufacturing Facilities
Prevents the dangerous accumulation of explosive off-gases, such as hydrogen, during battery charging and assembly processes.
Pump & Equipment Rooms
Extracts excess heat generated by heavy machinery and pumps, protecting critical equipment from thermal damage and ensuring stable operation.
Hazardous Material Storage Areas
Continuous, spark-resistant ventilation prevents the buildup of toxic or combustible vapors in enclosed chemical storage zones.
LONGWELL — Trusted Industrial Fan Manufacturer Since 1990
Founded in 1990 in Yuyao, Ningbo, LONGWELL has grown into a vertically integrated ventilation technology group. We engineer standard and explosion-proof fan and motor systems with 4,000 m²+ of manufacturing floor, dedicated aerodynamics labs, and a global export network.
Every LONGWELL fan, including our EX-rated explosion-proof series, is built on automated lines, featuring computer-balanced impellers and 100% run-testing before shipment. We are certified to ISO 9001:2015 and ISO 14001, ensuring the highest standards of safety and reliability for hazardous and industrial applications.
Production & Quality Control
Strict quality control, automated assembly, and robust packaging ensure your fans arrive ready for installation.
Global Market Presence
LONGWELL exhaust fans are the preferred choice for EPC contractors and industrial clients worldwide.
Trusted by Leading Brands
We supply reliable industrial ventilation solutions to top-tier global manufacturers.
Professional & Certified
Our products meet stringent international safety, quality, and performance standards.
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View Product →Frequently Asked Questions
Quick answers about the LWWEX-IR side wall exhaust fan.
Is the LWWEX-IR series explosion-proof?
Yes, the LWWEX-IR features an explosion-proof pure copper motor and carries the 'Ex' explosion-proof rating, making it suitable for hazardous environments where flammable gases or dust may be present.
What material is the casing made of?
The casing is constructed from thickened carbon steel. It is precisely cut and formed with a smooth, spray-painted finish to provide excellent wear resistance, rust protection, and high hardness for extended durability.
Does this fan protect against outdoor weather?
Yes. It comes with a built-in insect and rain proof cover. The sloped design quickly channels rainwater away, while a dense metal mesh prevents insects, leaves, and larger debris from entering the facility.
What is the airflow range for this exhaust fan?
The LWWEX-IR series covers a wide range of ventilation needs, offering 13 different frame sizes with airflow capacities ranging from 1,500 m³/h up to 34,000 m³/h (Model LWWEX-IR-9A).
Does it use a direct-drive or belt-driven motor?
It uses a direct-drive pure copper motor. The motor directly drives the impeller, ensuring sufficient power, strong sealing, and significantly lowering routine maintenance burdens compared to belt-driven systems.
Need a Quote or Custom Specifications?
Tell us your airflow, static pressure, and facility requirements — our engineers will size the right LWWEX-IR model and provide a quote within 1 business day.
