Flip Flap Hinge

High strength engineering polymer and stainless steel Will never rust or stain.
Opens 90 degrees on both sides from normal position.
Spring loaded mechanism.
Returns to normal position on its own if open below 85 degrees either side.
However the door stays open if opened to 90 degrees.
Smooth and silent operation.
Suitable for 40 mm thick doors.
Door leaf weight 30 Kg per set of two Hinges.