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Without disrupting passive indoor ventilation, this backflow preventer will prevent backflow from your ventilation system. It is made of ABS plastic and the membrane is made of a special lightweight polymer.
| -20% | €2.40 |
| -15% | €2.55 |
| -10% | €2.70 |
| -7.5% | €2.78 |
| -5% | €2.85 |
Without disrupting passive indoor ventilation, this backflow preventer prevents backflow from your ventilation system. It is made of ABS plastic and the membrane is made of a special lightweight polymer.
Designed for connection to 100mm diameter air ducts.
You can easily connect it with the special fasteners provided with your fan.
The rear valve is mounted on a fan with special fasteners provided on the fan spindle.
D: 100mm
a: 14mm
