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The Elta SMB650 Inline Mixed Flow Box Fan – 650 mm Single Phase AC is a high‑capacity ventilation fan from Elta’s mixed‑flow Multiflow SMB series, designed for commercial and industrial HVAC duct systems. Featuring a heavy‑duty pre‑galvanised steel casing with Ductmate flanged connections, and a backward‑curved aerofoil mixed‑flow impeller, it delivers powerful airflow with excellent efficiency and reduced noise. Powered by a reliable single‑phase AC external rotor motor, the SMB650 is ideal for large extract and supply applications in factories, warehouses, retail spaces, workshops, and other large duct networks requiring strong, consistent ventilation performance.
Casing: Pre‑galvanised sheet steel with Ductmate flanged connections for secure duct installation
Impeller: High‑efficiency backward‑curved aerofoil mixed‑flow blades
Motor: Single‑phase AC external rotor with sealed bearings for durability
Operating Temperature: Rated up to +60 °C
Finish: Corrosion‑resistant protective coating
Product Type: Inline Mixed Flow Box Fan (Multiflow SMB series)
Model: SMB650 / 4‑1AC (Single‑Phase AC)
Fan Diameter: 650 mm
Casing Material: Pre‑galvanised steel with flange connections
Impeller Type: Backward‑curved aerofoil mixed‑flow blades
Motor Type: Single‑phase AC external rotor motor
Voltage: 230–240 V AC / 50 Hz
Operating Temperature: Up to +60 °C
Installation: Inline duct mounting with flanged ends
Applications: HVAC extract and supply ventilation in industrial, commercial, and large building duct systems
Estimated Delivery: 2–5 Working Days
Shipping costs will be calculated during checkout.
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The Elta SMB650 Inline Mixed Flow Box Fan – 650 mm Single Phase AC is a high‑capacity ventilation fan from Elta’s mixed‑flow Multiflow SMB series, designed for commercial and industrial HVAC duct systems. Featuring a heavy‑duty pre‑galvanised steel casing with Ductmate flanged connections, and a backward‑curved aerofoil mixed‑flow impeller, it delivers powerful airflow with excellent efficiency and reduced noise. Powered by a reliable single‑phase AC external rotor motor, the SMB650 is ideal for large extract and supply applications in factories, warehouses, retail spaces, workshops, and other large duct networks requiring strong, consistent ventilation performance.
Casing: Pre‑galvanised sheet steel with Ductmate flanged connections for secure duct installation
Impeller: High‑efficiency backward‑curved aerofoil mixed‑flow blades
Motor: Single‑phase AC external rotor with sealed bearings for durability
Operating Temperature: Rated up to +60 °C
Finish: Corrosion‑resistant protective coating
Product Type: Inline Mixed Flow Box Fan (Multiflow SMB series)
Model: SMB650 / 4‑1AC (Single‑Phase AC)
Fan Diameter: 650 mm
Casing Material: Pre‑galvanised steel with flange connections
Impeller Type: Backward‑curved aerofoil mixed‑flow blades
Motor Type: Single‑phase AC external rotor motor
Voltage: 230–240 V AC / 50 Hz
Operating Temperature: Up to +60 °C
Installation: Inline duct mounting with flanged ends
Applications: HVAC extract and supply ventilation in industrial, commercial, and large building duct 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.