Estimated Delivery: 2–5 Working Days
Enter postcode in checkout for delivery cost
View transport policyThe Elta SMB500 Inline Mixed Flow Box Fan – 500 mm Single Phase AC is a high‑performance duct‑mounted ventilation fan from Elta’s Multiflow SMB series, designed for commercial, industrial and large‑space HVAC applications. It features a heavy‑duty pre‑galvanised steel casing with Ductmate flanged connections for quick duct installation. The backward‑curved mixed‑flow impeller delivers strong airflow with excellent efficiency while keeping noise levels low. Powered by a reliable single‑phase AC external rotor motor, the SMB500 is suitable for supply or extract ventilation in duct networks, workshops, factories and retail spaces with ambient temperatures up to +60 °C.
Casing: Pre‑galvanised sheet steel with flanged duct connections for easy installation
Impeller: Backward‑curved aerofoil mixed‑flow blades for high throughput and efficiency
Motor: Single‑phase AC external rotor motor with sealed bearings for long life
Operating Temperature: Rated for operating conditions up to +60 °C
Designed for reliable performance in commercial and industrial ventilation applications
Product Type: Inline Mixed Flow Box Fan (Multiflow SMB series)
Model: SMB500 / 4‑1AC (Single‑Phase AC)
Fan Diameter: 500 mm
Casing Material: Pre‑galvanised sheet steel with flanged 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 mounted with flanges
Applications: HVAC extract and supply, ventilation in workshops, industrial facilities, commercial 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.
