Estimated Delivery: 2–5 Working Days
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View transport policyThe 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
At Direct Duct Supplies, we are committed to delivering your orders quickly, safely, and efficiently. Below you will find our shipping procedures and policies. If you have any specific delivery deadlines or special requirements, please contact our team and we will do our best to assist.
We work hard to get our customers what they need when they need it. Below you will find information on our delivery service. If you have a particular need or deadline, please contact us and we’ll do our best to accommodate you.
Delivery Charges
Delivery charges vary depending on the size, weight, and value of your order. Shipping costs are calculated at checkout and clearly displayed on the My Basket page before you complete your purchase.
We offer a range of delivery options, including free delivery on selected orders, with standard delivery charges typically ranging between £20 and £40 depending on the service selected.
Delivery Time (UK)
We offer fast and reliable UK delivery, with most orders arriving within 2–5 working days from the date of purchase.
Smaller items typically arrive within 2–4 working days, while larger or heavier items may take 3–5 working days. Delivery times may vary slightly during busy periods or holidays.
Easy & Convenient Delivery
We use a combination of in-house logistics and trusted UK courier partners including Royal Mail, DPD and DX. This allows us to provide reliable delivery coverage across the UK. Once your order has been dispatched, you will receive an email confirmation with tracking details. You can also track your delivery via the My Account section.
Next Day Delivery
We offer next working day delivery on selected items and order types. Availability and pricing depend on the size, weight, and order value. Please contact us prior to ordering to confirm eligibility and we will do our best to arrange this.
International, Scottish Highlands, Islands & Northern Ireland
We are able to ship orders internationally, as well as to the Scottish Highlands and offshore locations. Please contact us for a delivery quote before placing your order.
Please note that some items may not be eligible for international shipping due to size or weight restrictions.
