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The 20-storey "Bürohaus an der Alten Oper" is a fixed element of the Frankfurt skyline and has a superb location within the banking quarter. From the office block, one has an uninterrupted view of Frankfurt's most well-known classical building, "Alte Oper" (Old Opera House). OBO Pyroline® Rapid fire protection ducts were used during the refurbishment of the high-quality office areas.
In the context of the total refurbishment of the building, 300 metres of the OBO Pyroline® Rapid cable duct were laid in the raised floor of the office spaces in December 2012. As this measure considerably reduced the fire load in the raised floor, it was not necessary to install a sprinkler system in the raised floor – thus making considerable cost savings. As the internal dimensions of the OBO Pyroline® Rapid fire protection ducts are almost identical with the external dimensions, a particularly high filling volume was available.