For Upward and Top-Opening flap with concealed or single knuckle hinges. Comes with screw. Designed to securely latch a flap closed and hold the flap in the fully opened. Torque Calculation: Torque = Door Height x 1/2 x Door Weight. Torque per piece : 40~70kg.cm (35~60 lbs.inch).
Soft-Down Close - Upward and Top Opening Additional InformationInstallation Instructions