Systemair Ventilation Fan Manuals

1 Systemair ventilation fan with owner guides and verified specifications

Select your Systemair model number below for installation steps, settings, maintenance schedules, troubleshooting and the full specification sheet. Your model number is printed on the rating plate.

Systemair ventilation fans by model number

Systemair Ventilation Fan Manuals

Model	Description	Certified
K 5 (40404)K Series	120 CFM in-line ventilation fan	March 2026