Duct electric heater.
Duct water heaters are designed for heating of supply air in round ventilation systems.
PR plate heat exchanger with X-shaped air passage designed for exhaust air heat recovery in conditioning and ventilating systems.
Silencer is applied for noise absorption produced during the ventilating equipment operation and spread along the ducting systems.
Panel type air filters are applied for supply air and sometimes extract air purification in round duct ventilating and conditioning systems.