Rectifier Technology
All Biddle air curtains (SR, DoorFlow, CITY, Style and MAT) are equipped with the patented rectifier technology. This results in the following advantages:
- Significant climate separation efficiency (90%)
- Excellent downward penetration
- Laminar air flow
- Air curtain warmth benefits the indoor climate
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| Without rectifier: large air displacement | With rectifier: perfect climate separation |
High yield
Because of the difference in temperature between inside and outside areas, air always moves in the vicinity of an open door: warm air streams in and cold air streams out. The patented rectifier ensures that the air turbulence caused by the fans is transformed into a laminar air stream. The air stream reaches the floor at a much lower air speed than air curtains without the rectifier. The tight air stream prevents cold air from streaming out. This achieves a climate separation efficiency of over 90%.
