Nationwide UK Delivery
Trade Accounts Available
Technical Support
Nationwide UK Delivery
Trade Accounts Available
Technical Support
| Availability | In Stock & Ready to Dispatch |
| Bulk Orders | Project & Bulk Quantities Available |
| In-House Logistics | Reliable Delivery with Standard and Express Shipping Options |
The S&P CRHB/4-225 N 225 mm Roof-Mounted Fan is a compact centrifugal roof ventilation unit designed for reliable airflow in commercial and industrial buildings. It features a horizontal discharge design with a very low-profile structure, making it ideal for roof installations where height is limited. The fan uses a high-efficiency backward-curved impeller and an external rotor motor for strong airflow and energy-efficient operation. Built with a galvanised steel base and aluminium weather cowl, the unit provides durable protection against outdoor conditions and long-term ventilation performance.
Base: Galvanised sheet steel construction for durability.
Cowl: Spun aluminium weather protection hood.
Impeller: High-efficiency backward-curved centrifugal impeller (plastic on smaller models).
Motor: External rotor motor with thermal overload protection.
Guard: Steel bird-proof safety guard to protect the impeller.
Product Type: Centrifugal Roof-Mounted Fan (CRHB Series)
Model: CRHB/4-225 N
Fan Diameter: 225 mm
Discharge Type: Horizontal roof discharge
Motor Type: External rotor AC motor
Voltage: 230 V / 50–60 Hz (Single Phase)
Protection Rating: IP54, insulation class F
Max Airflow: Approx. 740 m³/h
Speed: Approx. 1400 rpm
Max Temperature: Up to 70 °C continuous operation
Noise Level: Approx. 42 dB(A)
Installation: Roof mounted on flat or mounting base
Applications: Commercial buildings, warehouses, factories, workshops, and general HVAC extraction systems
Estimated Delivery: 2–5 Working Days
Shipping costs will be calculated during checkout.
Check delivery options at checkout
The S&P CRHB/4-225 N 225 mm Roof-Mounted Fan is a compact centrifugal roof ventilation unit designed for reliable airflow in commercial and industrial buildings. It features a horizontal discharge design with a very low-profile structure, making it ideal for roof installations where height is limited. The fan uses a high-efficiency backward-curved impeller and an external rotor motor for strong airflow and energy-efficient operation. Built with a galvanised steel base and aluminium weather cowl, the unit provides durable protection against outdoor conditions and long-term ventilation performance.
Base: Galvanised sheet steel construction for durability.
Cowl: Spun aluminium weather protection hood.
Impeller: High-efficiency backward-curved centrifugal impeller (plastic on smaller models).
Motor: External rotor motor with thermal overload protection.
Guard: Steel bird-proof safety guard to protect the impeller.
Product Type: Centrifugal Roof-Mounted Fan (CRHB Series)
Model: CRHB/4-225 N
Fan Diameter: 225 mm
Discharge Type: Horizontal roof discharge
Motor Type: External rotor AC motor
Voltage: 230 V / 50–60 Hz (Single Phase)
Protection Rating: IP54, insulation class F
Max Airflow: Approx. 740 m³/h
Speed: Approx. 1400 rpm
Max Temperature: Up to 70 °C continuous operation
Noise Level: Approx. 42 dB(A)
Installation: Roof mounted on flat or mounting base
Applications: Commercial buildings, warehouses, factories, workshops, and general HVAC extraction systems
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Shipping Information • UK-wide delivery, including Northern Ireland, Scottish Highlands and remote locations. • Orders are processed within 1–2 working days (Mon–Fri). • Standard UK delivery takes approximately 2–5 working days from purchase. • Shipping costs are calculated at checkout based on order size, weight and delivery location. • Free delivery is available on selected orders. Additional charges may apply for large, bulky or remote-area deliveries. • Tracking details are provided once your order has been dispatched. • International shipping is available. Customs duties, taxes and import fees may apply and are the responsibility of the customer. • If your order arrives damaged, incorrect or incomplete, please contact us within 7 days of delivery. For full details, please see our Shipping Policy.
Returns must be requested within 7 days of delivery and approved before being sent back. Items must be unused, undamaged, and in their original packaging. Customers are responsible for return shipping costs, and a restocking fee of up to 25% may apply. Refunds are processed within 3–5 working days after inspection. For damaged, faulty, or incorrect items, please contact us within 7 days of delivery.
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