Frontline Ladder Safety Dock* The ladder safety dock provides a non penetrating secure point of attachment to roof parapet walls * The ladder safety dock can also be installed on flat roof surfaces by fixing it * The adjustment screws include rubber pads in order to protect the facade and finished wall * Includes retro reflective tape for added high visibility and to help avoid any tripping hazards * Ready to be used out of the box and sets up in just minutes, no fasteners