Sugatsune, Lamp SDS-C301N/BLK Lid Stays, Plastic, Black,White

Mounting Hardware Included:: Yes. Notes: For use with upward & top- opening flaps with concealed or single knuckle hinges. To select which stay to use, the Torque Moment must be calculated. Torque Moment is calculated by multiplying 1/2 of the door height by the door weight. Door Height x 1/2 x Door Weight = Torque Moment. Product Finish: Black. Product Type: Soft Closing Lid Mechanism. Recommended Door Thickness: 20MM. Sold: Each.