The most efficient way to create AHU modules with continuous internal surfaces, without interruptions. This particular profile shape enables the use of both traditional panels and double-walled panels. In any case, the fastening screws of the panels remain hidden in the profile chamber. Hence, the surfaces have no projecting parts and are easy to be washed. This particular system fits both nylon and aluminium corners pieces, for panels ranging from 25 mm / 0.98" up to a maximum of 65 mm / 2.55".