Door communication system installation profile 4-way Features: Aluminum fastening profile for customer-specific integration of flush-mounted components of the Gira door communication system in letterbox systems, front panels or door side installations from e.g. JU-Metallwaren, Normbau. The installation profile is fastened via: The installation profile is fastened via Screwing through the front panel. Screwing onto fastening bolts. Fastening set for installation profile.. Screwing onto fastening bolts. Fastening set for installation profile. Notes: Using this profile, door stations, call buttons, information modules and color cameras can be integrated flush without a cover frame. The height adjustment ensures that the components can be installed flush even with different material thicknesses. Wall thickness of the front panel: 1.25 to 4 mm.