Dura-Line's Aerial FuturePath® is a configuration of MicroDucts not unlike the OSP HDPE version. The oversheath has additional UV inhibitors to allow 25+ years direct sunlight exposure while lashed to a support strand. The special external ribs on the oversheath help grip the lashing wire (Dura-Line recommends double-lashing). This allows the FuturePath additional stability during temperature fluctuations, minimizing strand travel. It is available in 12.7mm OD x 10mm ID MicroDucts, in either a 7-way or 4-way version.