Features • For upward-opening flap doors. • Built-in damper causes flap to close gently preventing slamming. • Built-in catch holds flap in fully opened position position. • Can also be used with concealed, piano, or butt hinges. • Depending on installation position, opening angle can be set to 80˚, 90° or 100˚. • Two stop version also available (adds another stop at either 60°, 65°or 70° depending on installation position) • Successfully passed 30,000 open/close cycles in a private test. • Closing speed adjustable.