AF3900 Ventilation fan

The AF3900 is a high performance ventilation fan that has been designed to deliver multiple air changes per hour and improve indoor air quality. These lightweight units are extremely effective in tackling airborne contaminants and reducing the presence of particles, emissions and virus transmission. The AF3900 model is fully weatherproof and designed to sit outside, making it ideal for a wide range of applications including offices, hospitals, classrooms, warehouses and virtually any other environment where frequent air changes are required. While enhancing air quality and increasing ventilation are the AF3900’s primary functions, it can also be used as an extractor fan when necessary. Weighing just 16kg, this product combines flexibility and simple functionality with impressive airflows that render suitability to a broad array of projects.

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  • Multiple air changes per hour – reducing airborne transmissions
  • Easy installation – plug in and switch on
  • Quiet operation – for use in noise-sensitive areas
  • Flexible deployment – up to 16 metres of ducting on the outlet side
  • Safe and easy to use – allowing simplified operation
  • Weatherproof unit – ideal for outdoor deployment


  • Offices
  • Healthcare
  • Warehouses
  • Facilities management
  • Education
  • Events and marquees
  • Retail
  • Agriculture
  • Distribution
  • Construction
  • Confined space working
  • Gymnasiums


Air flow (max)
Power supply
230 V 1 ph 50 Hz Run 1.6 A
Plug type
BS1363 230 V
Duct length (max)
16 metres x 300 mm (outlet only)
Noise level (max)
69 dBA / 87 LWA @ 3 metres
16 kg
Dimensions (L x W x H)
470 x 380 x 450 mm
Power consumption
368 W/h

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Andrews Sykes
FREEPHONE0800 211 611