“The advantage of the Donauer Top Fix is that it makes a single-handed installation of the rail from the top possible without having to secure it from below. The rail can be adjusted in all directions before tightening the screw,” said Sebastian Stoll, product manager at Donauer Solartechnik.
The Donauer Top Fix can also be used in combination with the Donauer Trapez Flex. Its components are made of aluminium and stainless steel.