
Systemair MUB500EV Multibox Insulated Duct Fan 230V Single Phase AC 1137W IP54
MUB 042 500EV 235406
Multibox Insulated Duct Fan – 230V Single Phase | 1137W | IP54 | Compact, High-Performance Fan for Supply & Extract Ventilation
The Multibox Insulated Duct Fan (1137W) is a compact yet powerful solution for residential and light commercial supply or extract ventilation systems. Designed for flexible installation indoors or outdoors, this single-phase fan offers excellent airflow performance, low-noise operation, and full compliance with ErP 2018 standards. Its insulated housing, modular design, and adjustable airflow direction make it an ideal choice for projects requiring efficiency and adaptability.
- Efficient Single-Phase Design: Delivers up to 7,488 m³/h airflow with a 230V motor—ideal for residential and light commercial ventilation systems.
- Thermal & Acoustic Insulation: 30 mm internal lining reduces sound and thermal transmission for quieter, more efficient operation.
- Modular & Flexible: Removable side panels allow for directional adjustment of airflow to suit any duct layout.
- Indoor & Outdoor Use: IP54 motor protection and robust housing ensure reliability in both indoor and sheltered outdoor environments.
- ErP 2018 Compliant: Meets energy efficiency requirements and is compatible with AC or EC motor types for 50/60 Hz systems.
Technical Specification
- Air Flow Rate: Max. 7,488 m³/h
- Input Power: 1,137 W | Input Current: 5.32 A
- Voltage / Frequency: 230 V / 50 Hz | Single Phase (1~)
- Speed: 1,386 rpm
- Capacitor: 30 µF
- Temperature Range: Up to 60°C (with or without speed control)
- Protection Rating: IP54 | Insulation Class: F
- Weight: 61 kg
✅ Choose the Multibox 1137W Single-Phase Fan for compact, insulated airflow with flexible mounting and dependable performance in varied ventilation scenarios.

Please find extensive Data Sheet in the downloads section below
Range | SystemAir Multibox |
Product | Duct Fan |
Type | Insulated Duct Fan |
Wattage | 1137 W |
Ingress Protection | IP54 |
Voltage | 230 V |
Number Of Phases | Single |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- STANDARD DELIVERY – 2–3 Working Days From Despatch (subject to stock availability) - £4.99 inc-VAT. (£4.16 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.