These Flap Barriers are designed to control pedestrian entering or exiting restricted areas. The aisle is blocked by a flap, after an opening pulse the flap retracts into the housing, consequently the aisle is completely clear. In the event of power failure the wings will automatically opened with anti clamping, the flap will be remained open in case of any obstacle or person standing in the middle of the two flaps. Flap barrier housing is made of sheet metal & powder coated. Optional colors are also available on requirements.