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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% | €2.80 |
-15% | €2.98 |
-10% | €3.15 |
-7.5% | €3.24 |
-5% | €3.33 |
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.
The backflow preventer is mounted on a fan with special fasteners provided on the fan spindle.
D: 125mm
a: 14mm