BKF Rectangular Duct Fans

Reliable smoke and heat extraction for emergency and daily use

Energy-Efficient
High Performance
Dual-Purpose
Robust

Robust

The unit features a zinc-magnesium coated steel casing and an external motor to simplify inspections and reduce the risk of fouling.

Efficient

The units are equipped with an IEC flange motor of efficiency class IE3, paired with a backward-curved steel impeller.

High Performance

The BKF system is able to extract hot smoke and gases at 400°C for 120 min at a time and continuously filter media at 120°C for daily use.

The BKF line of dual-purpose fans is designed to support daily ventilation needs and emergency smoke and heat extraction in the event of an accident or emergency. This makes it suitable for professional use along with commercial and residential spaces. Units can support the creation of smoke-free escape routes to allow for safe egress and the extraction of dangerous or poisonous gases to help reduce the risk involved with extinguishing and incident management.

Units are built around single speed IE3 or two speed IE1 motor to support efficiency and utilise a backward curved impeller made from either pre-galvanised steel or from steel and galvanised. This is protected by a zinc-magnesium coated steel casing that allows the unit to carry out its work continuously extracting 120°C of media or 400°C of air for up to 120 min.

Units can be speed controlled through a combination of frequency converters with filters. They are also compatible with the Systemair accessory range, allowing for the addition of motor protectors, weather protectors, protection guards, and more.