GDA 55 is a structural joint for floors, 35, 50 and 80 mm, in good quality natural aluminium with the interchangeable neoprene insert allowing the joint to expand and contract. Visible thickness 55 mm (GDA 55), bar length 3 lm. Black or Grey insert. Bear weights of cars, with the wheel loads up to 650 kg and trucks with a maximum load of 1000 kg on the wheel.