Retractable Ventilation Control Blinds

Retractable Vent Blinds are a simple and robust Ventilation Control option for areas which require vehicle access. Often referred to as Nixon Flaps or QBC Blinds, These seal against a formed bulkhead under pressure and roll up and down by operating a manual winch. Each Blind is supplied in kit form with accessories required for installation.

We can design and manufacture Retractable Vent Blinds to suit any tunnel profile, with rated pressures up to 1.5kPa.

Key applications include;

1. Ventilation Stoppings which require intermittent vehicle or machinery access.
2. Regulators for fresh air and Return airways.
3. Temporary Ventilation controls while awaiting permanent infrastructure.
4. Dust Controls.