Magfans are top of the line in terms of efficiency, capacity and air flow ratio. MagFan holds the record as the best ever tested fan at Bess Labs, University of Illinois!!

The Magdoor from DACS is a fast operating roller door that substitutes conventional shutter systems and ensures completely unrestricted airflow and unsurpassed efficiency.

MagDoor, with its insulated PVC segments, seals off a full size wall fan like MagFan, to prevent backdraft and cold air ingress.

Magfan/Magdoor Brochure

Take a vitual tour of Hillmanor Holsteins. This is an impressive operation that utilizes Mag Fans in their ventilation

Video taken from Perth County facebook page