Features • For upward-opening flap doors. • Built in damper causes flap doors to close gently and prevents slamming. • Built in catch to hold flap when fully opened and when fully closed. • Efficiently uses spaces: enough space left to install shelves. • Snap-in installation to mounting plate. • Mounting plate option for aluminium frame installation (sold separately). • Can also be used with single axis hinges like concealed, piano or butt hinges. • Use in pairs.