OFR Series Over floor Raceway provides four-channels of capacity and access to a wide range of power, communications, and A/V connectivity options. OFR is the smallest, lowest, narrowest, ADA compliant profile available in over floor raceway on the market. The base is made of 0. 080" extruded aluminum, and the cover is made of 0. 040" steel with a durable, black powder coat finish. It can be installed over existing floor coverings, or directly to the subfloor and is both tamper-resistant and installer-friendly. Packed in one (1) eight foot section of base and cover.