A method of assembling a portal can include obtaining a stile, wherein the stile can include a first stile and a second stile; arranging a thermal strut and insulative bar between the first stile and the second stile, wherein the insulative bar can define a lock groove; arranging a lock assembly within the lock groove, wherein the lock assembly can include a fastening plate rotatably coupled to the lock assembly; and coupling the lock assembly to the stile by rotating the fastening plate and, thereafter, engaging fasteners to provide friction between the fastening plate and the insulative bar.

A profile frame system for sliding elements includes a first and second metallic frame profiles, a one-piece insulating support bar made of plastic with a first upper bar plane and a second lower bar plane parallel to the first bar plane. Each bar plane has, on both longitudinal sides, roll-in heads rolled into respective grooves in the first and the second frame profile and thus connect the two frame profiles, wherein in the insulating support bar above the first upper bar plane a snap-in geometry oriented on the longitudinal side is provided, in which a runner is snapped-in. The first upper bar plane is connected to the second lower bar plane with two support struts. These support struts are arranged to diverge from one another at an acute angle , starting from the snap-in geometry in the first upper bar plane and extending towards the second lower bar plane.