Features • For top-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 either 70˚or 105˚. • Successfully passed for the 30,000 open/close private cycle test. • Closing speed adjustable.