Profile: LadderPort offers permanent building mounted ladder receiver and stabilizer. We also manufacture portable winch system, roof hatch safety grab bars, roof hatch safety cages, parapet back stairs, and roof pads. The LadderPort Type 4 metal building model has adjustable attach points at both the bottom and the top LadderPort for use where there is no easy method of attaching to the roofline. Bolting to a 3"' X 3"' angle frame that has been secured to the girt inside the building is recommended when installing this model.