The Heat Resistant Fire Rated Centrifugal Ventilation Cabinet is a heavy-duty enclosure integrating a centrifugal fan with a fire-resistant steel housing. It is designed for high-temperature ventilation systems requiring fire safety compliance and reliable airflow performance. The unit combines a galvanized steel body, multi-layer insulation, and an externally mounted motor for efficient operation in demanding environments.
The cabinet is fabricated from heavy-gauge galvanized steel sheet metal with welded seams and reinforced corners. The interior is lined with multi-layer ceramic fiber and mineral wool insulation, providing thermal resistance for continuous operation up to 400°C and peak exposure up to 800°C. The exterior surface is finished with a corrosion-resistant powder coating. All joints are sealed with intumescent firestop compound to prevent flame and smoke penetration.
An external centrifugal fan motor is mounted on a separate bracket outside the main airflow path. The motor is housed in a NEMA 4X rated enclosure for protection against moisture, dust, and corrosive agents. The drive system uses belt-driven connection with adjustable pulley for speed control. Motor power ranges from 0.75 kW to 7.5 kW depending on model configuration. Electrical connections are routed through liquid-tight conduit fittings.
Standard models are available in sizes from 600 mm x 600 mm x 600 mm up to 1200 mm x 1200 mm x 900 mm. Custom dimensions can be manufactured to order. Inlet and outlet openings are positioned on opposite sides for straight-through airflow. Flanged connections are provided on all four sides for duct attachment. Optional accessories include access doors, inspection windows, drain plugs, and sensor ports.
🔧 Robust Construction & Fire Resistance--Built with heavy-gauge galvanized steel and multi-layer ceramic fiber insulation, this unit withstands continuous operation at 400°C and peak loads up to 800°C. The outer shell is powder-coated for corrosion resistance — ideal for harsh environments. No plastic parts near heat zones.
⚙️ Motor & Drive System--External centrifugal motor mounted on a vibration-dampening bracket outside the airstream. NEMA 4X rated enclosure protects against dust, water jets, and salt spray. Belt-driven system with adjustable pulleys allows precise airflow control. Power range: 0.75kW – 7.5kW.
📏 Modular Sizing & Customization--Standard sizes from 600x600x600mm to 1200x1200x900mm. Custom dimensions available on request. Inlet/outlet flanges on opposite sides for straight-through airflow. Four-side flange connections simplify duct routing.
📊 Performance Specs--Airflow: 1,000 – 12,000 m³/h | Static pressure: 200 – 1,500 Pa | Noise level: <65 dB(A) @ 3m. Designed for 24/7 operation with minimal maintenance intervals.
📜 Certifications & Compliance--Meets UL 181, NFPA 90A, EN 1363-1, ASTM E119. Motor & electrical components comply with IEC/NEMA standards. Optional explosion-proof motors (Class I, Div 2) available.
🛠️ Installation & Packaging--Wall or ceiling mount via pre-drilled flanges. Minimum 300mm clearance required. Flexible duct connectors included. Individually packed in wooden crates with foam padding. Net weight: 80–450kg. Lead time: 15–20 working days.
premium fire-rated enclosure with integrated centrifugal fan motor for commercial kitchen exhaust, high-rise smoke control, and industrial HVAC systems. Heavy-gauge galvanized steel housing with multi-layer ceramic fiber insulation withstands continuous 400°C and peak 800°C. Meets UL 181, NFPA 90A, EN 1363-1 fire safety standards. Modular design with pre-drilled flanges for easy wall or ceiling mount. Sound attenuation lining keeps noise below 65 dB(A). NEMA 4X rated electrical enclosure for moisture and dust protection. Removable access panels for simple maintenance. 10-year limited warranty. Ideal for restaurant exhaust, building smoke shafts, data center cooling, marine ventilation, lab fume containment, and pharmaceutical facilities. Custom sizes and explosion-proof motor options available upon request.
