Concealed door frame, aluminium door frame PIU is an innovative product based on the latest technological developments in the materials used. It is a unique, lightweight, multi-chambered aluminium construction, with extremely high rigidity. Band-free doors with a concealed frame appear lighter, concealed in the wall, modern. This technology is also distinguished by the concealment of all supplementary elements. The increased thickness (up to 50mm), compared to other modern doors, stabilises the leaf and increases the door acoustics. Aluminium frame raw, flush mounted for painting, lacquered in RAL colours or in anodised matt, brushed stainless steel shade (bright brushed steel), black (brushed black), brown (brushed dark brown). High doors can be manufactured without an upper frame beam up to 300 cm and even higher – concealed ceiling frame.
PIU aluminium frames are classified as:
Available in 2 types of concealed frame: inward and outward opening, while maintaining the visual effect of facing the wall. In the case of different opening directions, e.g. in the halls and corridors, the high doors still have the same height on the flush side of the wall. In this way, a visual effect of a smooth surface is obtained.